shairplay: fix PKG_FIXUP

PKG_FIXUP should be defined before including package.mk

Signed-off-by: Nicolas Thill <nico@openwrt.org>

sound/shairplay/Makefile

@@ -21,10 +21,10 @@ PKG_MAINTAINER:=Álvaro Fernández Rojas <noltari@gmail.com>
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE
 
-include $(INCLUDE_DIR)/package.mk
-
 PKG_FIXUP:=autoreconf
 
+include $(INCLUDE_DIR)/package.mk
+
 define Package/shairplay
   SECTION:=sound
   CATEGORY:=Sound