octeon: select gcc 4.6 by default

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41843 3c298f89-4303-0410-b956-a3cf2f4a3e73
octeon: add detection for edgerouter and edgerouter-pro

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41844 3c298f89-4303-0410-b956-a3cf2f4a3e73
octeon: add gpio driver

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41845 3c298f89-4303-0410-b956-a3cf2f4a3e73
octeon: enable usb and gpio

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41846 3c298f89-4303-0410-b956-a3cf2f4a3e73