PHY Set BW ( u8 bw)

1. If forcefastclock is zero

   1. Call Clock Control with 0 as the argument (fast clock)

2. Copy bw to a global location also named bw

3. If Core revision < 17

   1. Read Core Regiser 0x120 and save as tmp

4. Call PHY reset

5. Call PHY Init - Note that this call is recursive

6. Call Rateset BW MCS Filter with hw_rateset and bw as arguments

7. If the clock speed was changed above

   1. Call Clock Control with 2 as the argument (dynamic clock)