ppc40x: remove __dev_{in,ex}it annotations

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@35918 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: correct board name to make LEDs work on RB750

Patch by: Denver A <denvera@gmail.com>
Patchwork: http://patchwork.openwrt.org/patch/3419/
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@35919 3c298f89-4303-0410-b956-a3cf2f4a3e73