N PHY Adjust RX Analog PFBW (u16 factor)

1. If PHY Revision >= 3

   1. If the current channel is 11 and the current channel width is 40 MHz

      1. If nphy_anarxlpf_adjusted is 0

         1. Write (nphy_rccal_value + factor) ORed with 0x80 to Radio Register 0x606B

      2. Set nphy_anarxlpf_adjusted to 1

   2. Otherwise

      1. If nphy_anarxlpf_adjusted is not zero

         1. Write nphy_rccal_value ORed with 0x80 to Radio Register 0x606B

      2. Set nphy_anarxlpf_adjusted to 0