mac80211: allow building for linux 3.1 again

wireless-testing 2011-08-26 properly detects and works with linux 3.1.

SVN-Revision: 28096

package/mac80211/Makefile

@@ -48,7 +48,7 @@ define KernelPackage/mac80211/Default
   SUBMENU:=$(WMENU)
   URL:=http://linuxwireless.org/
   MAINTAINER:=Felix Fietkau <[email protected]>
-  DEPENDS:=@(!(TARGET_avr32||TARGET_ep93xx||TARGET_ps3||TARGET_pxcab||LINUX_3_1)||BROKEN)
+  DEPENDS:=@(!(TARGET_avr32||TARGET_ep93xx||TARGET_ps3||TARGET_pxcab)||BROKEN)
 endef
 
 define KernelPackage/cfg80211