ar71xx: add kernel support for the Oolite v1 board

Patch-by: Lars Bøgild Thomsen <lth@cow.dk>
Patchwork: http://patchwork.openwrt.org/patch/4922/


[juhosg:
 - use a separate patch for kernel changes,
 - reorder Kconfig and Makefile entries,
 - change function and variable names to be lowercase only
   and fix misaligned tabs in mach-gs-oolite.c,
   ... ]
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40032 3c298f89-4303-0410-b956-a3cf2f4a3e73