php: enable xsl extension

Signed-off-by: Roman Ondráček <ondracek.roman@centrum.cz>

recipes-devtools/php/php_%.bbappend

@@ -4,7 +4,7 @@ DEPENDS += "curl libxml2 libzip zlib"
 
 DEPENDS_class-native += "curl-native libxml2-native libzip-native"
 
-EXTRA_OECONF_append = " --enable-fpm --enable-mbstring --with-curl --with-libxml --with-zip"
+EXTRA_OECONF_append = " --enable-fpm --enable-mbstring --with-curl --with-libxml --with-xsl --with-zip"
 
 EXTRA_OECONF_class-native = " \
 	${COMMON_EXTRA_OECONF} \