bcmdhd: Update bcm43241 firmware to version 6.10.170.3

- Disable spur mode to fix potential FW hangs
- Fix handling of multicast packets after a beacon with DTIM != 0
  if the last packet received has a more data bit set

Bug: 7324935

Change-Id: Ia9b0bea3e4a83810afb590ac36537b049cee912b
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>