Update FW for WL128x chip:
 STA FW version 7.1.5.50.74
 AP FW version 7.2.1.0.54

Update FW for WL127x chip:
 STA FW version 6.1.5.50.74
 AP FW version 6.2.1.0.54
Signed-off-by: Shahar Levi <shahar_levi@ti.com>