mac80211: fix 5ghz variable name

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 44907

package/kernel/mac80211/Makefile

@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 PKG_NAME:=mac80211
 
 PKG_VERSION:=2015-03-09
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 PKG_SOURCE_URL:=http://mirror2.openwrt.org/sources
 PKG_BACKPORT_VERSION:=
 PKG_MD5SUM:=6d4b04e4ce8a1f54dabfb04f4709453c

package/kernel/mac80211/files/lib/wifi/mac80211.sh

@@ -86,8 +86,8 @@ detect_mac80211() {
 		iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
 
 		vht_cap=$(iw phy "$dev" info | grep -c 'VHT Capabilities')
-		5ghz_cap=$(iw phy "$dev" info | grep -c "Band 2")
-		[ "$vht_cap" -gt 0 -a "$5ghz_cap" -gt 0 ] && {
+		cap_5ghz=$(iw phy "$dev" info | grep -c "Band 2")
+		[ "$vht_cap" -gt 0 -a "$cap_5ghz" -gt 0 ] && {
 			mode_band="a";
 			channel="36"
 			htmode="VHT80"