ramips: fix mac address partitions on ASL-26555

ramips: fix mac address partitions on ASL-26555

ASL-26555 16MB: caldata is present on uboot-env and devdata, but the proper one seems to be the devdata, since mac address corresponds to Amper, the real manufacturer, meanwhile the caldata on  uboot-env corresponds to D-Link.
ASL-26555 8MB: caldata is only present on uboot-env, but its mac address corresponds to Alpha, the real manufacturer.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41768 3c298f89-4303-0410-b956-a3cf2f4a3e73