php7: enable filter support by default (fixes #3831)

Filter support brings several useful features which many PHP applications
rely on. To make it easier for users who don't want to build own packages
enable this by default. This slightly increases the binary SAPI packages,
but since PHP is a huge monster anyway, I doubt this hurts anybody.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

lang/php7/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=php
 PKG_VERSION:=7.1.4
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_MAINTAINER:=Michael Heimpold <mhei@heimpold.de>
 
@@ -66,6 +66,7 @@ define Package/php7/config
 	config PHP7_FILTER
 		bool "PHP7 Filter support"
 		depends on PACKAGE_php7-cli || PACKAGE_php7-cgi
+		default y
 
 	config PHP7_LIBXML
 		bool "PHP7 LIBXML support"