php: fix build breakage

The zip extension requires zlib, so select it.

[Peter: Only select zlib, not php zlib extension]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/php/Config.ext

@@ -125,6 +125,7 @@ config BR2_PACKAGE_PHP_EXT_SYSVSHM
 
 config BR2_PACKAGE_PHP_EXT_ZIP
 	bool "zip"
+	select BR2_PACKAGE_ZLIB
 	help
 	  Zip read/write support
 

package/php/php.mk

@@ -70,7 +70,7 @@ ifeq ($(BR2_PACKAGE_PHP_EXT_SIMPLEXML),y)
 	PHP_CONF_OPT += --enable-simplexml
 endif
 
-ifeq ($(BR2_PACKAGE_PHP_EXT_ZLIB),y)
+ifneq ($(BR2_PACKAGE_PHP_EXT_ZLIB)$(BR2_PACKAGE_PHP_EXT_ZIP),)
 	PHP_CONF_OPT += --with-zlib=$(STAGING_DIR)/usr
 	PHP_DEPENDENCIES += zlib
 endif