b43: add support for BCM43131 chipset with N-PHY rev 17

It contains radio 0x2057 rev 14 just like a BCM43217, so it doesn't
require any magic. The main difference is that BCM4313 is 1x1:1.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc drivers/net/wireless/b43/main.c
Simple merge

diff --cc drivers/net/wireless/b43/phy_n.c
Simple merge

diff --cc include/linux/bcma/bcma.h
Simple merge