brcm47xx: deactivate mips wait instruction only for BCM4706

The wait instruction is only broken on the BCM4706 and not on the other 
similar SoCs.

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


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38979 3c298f89-4303-0410-b956-a3cf2f4a3e73
brcm47xx: misc cleanups

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


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38980 3c298f89-4303-0410-b956-a3cf2f4a3e73