bcm63xx: remove 3.3 support

3.6 is tested enough to be considered stable.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35009 3c298f89-4303-0410-b956-a3cf2f4a3e73
bcm63xx: Fix caldata partition mtd patch

Allow bcm63xxpart to receive a caldata offset if calibration data is contained in flash.

Tested-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35010 3c298f89-4303-0410-b956-a3cf2f4a3e73
bcm63xx: Add Huawei HG556a support

Add Huawei EchoLife HG556a support.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
[jogo@openwrt.org: added some code style fixes]
Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35011 3c298f89-4303-0410-b956-a3cf2f4a3e73