mac80211: do not export the backports linux/module.h, it breaks out-of-tree driver builds

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 43609

package/kernel/mac80211/Makefile

@@ -1710,6 +1710,7 @@ define Build/InstallDev
 	$(CP) $(PKG_BUILD_DIR)/backport-include/* $(1)/usr/include/mac80211-backport/
 	$(CP) $(PKG_BUILD_DIR)/net/mac80211/rate.h $(1)/usr/include/net/mac80211/
 	$(CP) $(PKG_BUILD_DIR)/drivers/net/wireless/ath/*.h $(1)/usr/include/mac80211/ath/
+	rm -f $(1)/usr/include/mac80211-backport/linux/module.h
 endef
 
 define KernelPackage/libertas-usb/install