postfix: prevent displaying config options when not enabled

Postfix's options should not be visible in the config when Postfix
is not enabled.

Secondly, place the config option menu behind the Postfix option rather
than underneath.

Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>

mail/postfix/Makefile

@@ -45,6 +45,7 @@ define Package/postfix
   	postdrop=26:postdrop=26
   URL:=http://www.postfix.org/
   DEPENDS:=+POSTFIX_CDB:tinycdb +POSTFIX_TLS:libopenssl +POSTFIX_SASL:libsasl2 +POSTFIX_LDAP:libopenldap +POSTFIX_DB:libdb47 +POSTFIX_SQLITE:libsqlite3 +POSTFIX_MYSQL:libmysqlclient +POSTFIX_PGSQL:libpq +POSTFIX_EAI:icu +POSTFIX_PCRE:libpcre
+  MENU:=1
 endef
 
 define Package/postfix/description
@@ -52,63 +53,71 @@ define Package/postfix/description
 endef
 
 define Package/postfix/config
-	menu "Select postfix build options"
-		config POSTFIX_TLS
-			bool "TLS support"
-			default y
-			help
-			  Implements TLS support in postfix (using OpenSSL).
-		config POSTFIX_SASL
-			bool "SASL support"
-			default y
-			help
-			  Implements SASL support in postfix (using Cyrus SASL).
-		config POSTFIX_LDAP
-			bool "LDAP support"
-			default y
-			help
-			  Implements LDAP support in postfix (using OpenLDAP).
-		config POSTFIX_DB
-			bool "BerkeleyDB support"
-			default n
-			help
-			  Implements support for btree and hash files using Berkeley DB.
-		config POSTFIX_CDB
-			bool "CDB support"
-			default y
-			help
-			  Implements support for cdb files using tinycdb
-		config POSTFIX_SQLITE
-			bool "SQLITE support"
-			default y
-			help
-			  Implements support for SQLite3 DB
-		config POSTFIX_MYSQL
-			bool "MYSQL support"
-			default n
-			help
-			  Implements support for MySQL
-		config POSTFIX_PGSQL
-			bool "PostgreSQL support"
-			default n
-			help
-			  Implement support for PostgreSQL
-		config POSTFIX_PCRE
-			bool "PCRE support"
-			default y
-			help
-			  Implement support for Perl Compatible Regular Expressions
-		config POSTFIX_EAI
-			bool "SMTPUTF8 support"
-			default n
-			help
-			  Enable Postfix support for Email Address Internationalization
-			  (EAI) as defined in RFC 6531 (SMTPUTF8 extension), RFC 6532
-			  (Internationalized email headers) and RFC 6533
-			  (Internationalized delivery status notifications).
-			  Since version 3.0, Postfix fully supports UTF-8 email
-			  addresses and UTF-8 message header values.
-	endmenu
+	config POSTFIX_TLS
+		depends on PACKAGE_postfix
+		bool "TLS support"
+		default y
+		help
+			Implements TLS support in postfix (using OpenSSL).
+	config POSTFIX_SASL
+		depends on PACKAGE_postfix
+		bool "SASL support"
+		default y
+		help
+			Implements SASL support in postfix (using Cyrus SASL).
+	config POSTFIX_LDAP
+		depends on PACKAGE_postfix
+		bool "LDAP support"
+		default y
+		help
+			Implements LDAP support in postfix (using OpenLDAP).
+	config POSTFIX_DB
+		depends on PACKAGE_postfix
+		bool "BerkeleyDB support"
+		default n
+		help
+			Implements support for btree and hash files using Berkeley DB.
+	config POSTFIX_CDB
+		depends on PACKAGE_postfix
+		bool "CDB support"
+		default y
+		help
+			Implements support for cdb files using tinycdb
+	config POSTFIX_SQLITE
+		depends on PACKAGE_postfix
+		bool "SQLITE support"
+		default y
+		help
+			Implements support for SQLite3 DB
+	config POSTFIX_MYSQL
+		depends on PACKAGE_postfix
+		bool "MYSQL support"
+		default n
+		help
+			Implements support for MySQL
+	config POSTFIX_PGSQL
+		depends on PACKAGE_postfix
+		bool "PostgreSQL support"
+		default n
+		help
+			Implement support for PostgreSQL
+	config POSTFIX_PCRE
+		depends on PACKAGE_postfix
+		bool "PCRE support"
+		default y
+		help
+			Implement support for Perl Compatible Regular Expressions
+	config POSTFIX_EAI
+		depends on PACKAGE_postfix
+		bool "SMTPUTF8 support"
+		default n
+		help
+			Enable Postfix support for Email Address Internationalization
+			(EAI) as defined in RFC 6531 (SMTPUTF8 extension), RFC 6532
+			(Internationalized email headers) and RFC 6533
+			(Internationalized delivery status notifications).
+			Since version 3.0, Postfix fully supports UTF-8 email
+			addresses and UTF-8 message header values.
 endef
 
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