brcm63xx: mac80211.sh skip per-vif txpower

Today we set txpower early using wl command.

In case of set:
iw dev <ifname> set txpower fixed <value>
seems some interfaces could fail and next we will
not start wpa_supplicant.

While we already set txpower early using wl interface
skip this iw set.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@iopsys.eu>

iopsys-brcm63xx-arm/base-files/lib/netifd/wireless/mac80211.sh

@@ -1180,7 +1180,7 @@ mac80211_setup_vif() {
 	}
 
 	set_default vif_txpower "$txpower"
-	[ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
+	#[ -z "$vif_txpower" ] || iw dev "$ifname" set txpower fixed "${vif_txpower%%.*}00"
 
 	case "$mode" in
 		mesh)