This deactivates ssb and G-PHY code in b43 for the mips74k profile in 
brcm47xx.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41594 3c298f89-4303-0410-b956-a3cf2f4a3e73