wl18xx: support 2nd set of mac/phy tx-power params

First set (low, medium and high TX power values) is used
for STA-HP background role. The 2nd set is used for other roles.

Update other mac/phy parameters according to new FW.

Signed-off-by: Yair Shapira <yair.shapira@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

Conflicts:
	drivers/net/wireless/ti/wl18xx/main.c