ramips: Basic support for the AsiaRF RT5350 based AWM002 module and evaluation board.

Basic support for the AsiaRF RT5350 based AWM002 module and evaluation board.
http://www.asiarf.com/Smallest-Tiny-Ralink-802-11n-Wireless-AP-Router-Module-Board-AWM002-product-view-375.html

Signed-off-by Jon Smirl <jonsmirl@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt@37521 3c298f89-4303-0410-b956-a3cf2f4a3e73