PHY TX LP FBW

1. Set a bool to (nphy_ipa2g_on and band type is 2G) or (pi->nphy_ipa5g_on and band type is 5G) (Should this be a macro??)

2. Set tmp to 0

3. If PHY Revision >= 3

   1. If the bool above is true
      1. Set tmp to 4
   2. Otherwise
      1. Set tmp to 1

   3. Write (((((tmp << 3) OR tmp) << 3 OR tmp) << 3) OR tmp) to PHY Register 0xE8

   4. If the bool above is true
      1. Set tmp to 1

      2. Write (((((tmp << 3) OR tmp) << 3 OR tmp) << 3) OR tmp) to PHY Register 0xE9