brcmsmac: add some workarounds for other chips again

brcmsmac: add some workarounds for other chips again

This adds some workarounds for the BCM4716, BCM47162, BCM5357 to the
phy code again. This patch reverts parts of the following patch.

commit 33fe2e21001ccd3b3bf3564de0a2e5d3eca477c0
Author: Arend van Spriel <arend@broadcom.com>
Date:   Wed Jun 29 16:46:35 2011 -0700

    staging: brcm80211: remove unsupported chipset code from brcmsmac phy

The BCM4716 is working for me with an other firmware and I am working
on adding support for the other chips.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>