Enable Support for 5/10 MHz channel width on ath10K based wifi

@BrainSlayer Have you tested it with the DD-WRT firmware and the QCA9888. Someone tested for me with a QCA4019 and that seems to work but with the same patch the QCA9888 seems to stop working if I set it to 5 or 10MHz. At one point it seemed to work for a short time then stops transmitting.