mpc85xx: disable a bunch of unused device nodes on the TL-WDR4900

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

git-svn-id: svn://svn.openwrt.org/openwrt@35707 3c298f89-4303-0410-b956-a3cf2f4a3e73
mpc85xx: add kmod-leds-gpio to the default packages

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

git-svn-id: svn://svn.openwrt.org/openwrt@35708 3c298f89-4303-0410-b956-a3cf2f4a3e73