dont build on arm as kernel headers are missing/have a different layout

SVN-Revision: 32904

package/acx-mac80211/Makefile

@@ -25,7 +25,7 @@ include $(INCLUDE_DIR)/package.mk
 define KernelPackage/acx-mac80211
   SUBMENU:=Wireless Drivers
   TITLE:=ACX1xx mac80211 driver
-  DEPENDS:=@PCI_SUPPORT||TARGET_ar7 +kmod-mac80211
+  DEPENDS:=@(PCI_SUPPORT||TARGET_ar7)&&!arm +kmod-mac80211
   FILES:=$(PKG_BUILD_DIR)/acx-mac80211.ko
   AUTOLOAD:=$(call AutoLoad,50,acx-mac80211)
   MENU:=1