libwifi: brcm: fix txpower percent
When drop 3dBm - drop 50%. So, show/cacl percent base on mW
Signed-off-by: Janusz Dziedzic janusz.dziedzic@iopsys.eu
When drop 3dBm - drop 50%. So, show/cacl percent base on mW
Signed-off-by: Janusz Dziedzic janusz.dziedzic@iopsys.eu