mac80211: add missing newline for "min_tx_power"

This prevents min_tx_power from functioning properly in some circumstances.
Add the missing newline.

Signed-off-by: Rany Hany <[email protected]>

package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh

@@ -145,7 +145,7 @@ mac80211_hostapd_setup_base() {
 	[ "$auto_channel" = 0 ] && [ -z "$channel_list" ] && \
 		channel_list="$channel"
 
-	[ "$min_tx_power" -gt 0 ] && append base_cfg "min_tx_power=$min_tx_power"
+	[ "$min_tx_power" -gt 0 ] && append base_cfg "min_tx_power=$min_tx_power" "$N"
 
 	set_default noscan 0