ramips: pinmux fixes

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36247 3c298f89-4303-0410-b956-a3cf2f4a3e73
ramips: fix pinmux settings for the RT-N56U

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36248 3c298f89-4303-0410-b956-a3cf2f4a3e73
ramips: add nor-flash node for the RT-N56U

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36249 3c298f89-4303-0410-b956-a3cf2f4a3e73