rtl8xxxu: For devices with external PA (8188RU), limit CCK TX power

Per the vendor driver, devices with an external PA needs limiting it's
TX power to 0x20.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
1 file changed