ramips: fix DIR-602D1 flash size

Fix DIR-620D1 flash size.

Signed-off-by: Serge Vasilugin <vasilugin@yandex.ru>

git-svn-id: svn://svn.openwrt.org/openwrt@36558 3c298f89-4303-0410-b956-a3cf2f4a3e73
ramips: unbreak rt2880 support

Signed-off-by: John Crsipin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@36559 3c298f89-4303-0410-b956-a3cf2f4a3e73
ramips: add gpio base properties to dtsi files

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt@36560 3c298f89-4303-0410-b956-a3cf2f4a3e73