kea: Remove openssl host dependency

OpenSSL is already built as part of tools (LibreSSL actually) and can be
used instead for the host build.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

net/kea/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=kea
 PKG_VERSION:=1.6.0
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://ftp.isc.org/isc/kea/$(PKG_VERSION)
@@ -20,7 +20,7 @@ PKG_MAINTAINER:=BangLang Huang<banglang.huang@foxmail.com>, Rosy Song<rosysong@r
 PKG_LICENSE:=MPL-2.0
 PKG_LICENSE_FILES:=COPYING
 
-HOST_BUILD_DEPENDS:=boost/host log4cplus/host openssl
+HOST_BUILD_DEPENDS:=boost/host log4cplus/host
 PKG_BUILD_DEPENDS:=kea/host
 HOST_BUILD_PARALLEL:=1
 PKG_BUILD_PARALLEL:=1
@@ -147,7 +147,7 @@ endef
 HOST_CONFIGURE_ARGS += \
 	--with-boost-include="$(STAGING_DIR_HOSTPKG)" \
 	--with-log4cplus="$(STAGING_DIR_HOSTPKG)" \
-	--with-openssl="$(STAGING_DIR)/usr" \
+	--with-openssl="$(STAGING_DIR_HOST)" \
 	--enable-boost-headers-only \
 	--enable-static-link \
 	--enable-generate-messages