The OpenWRT patches are for the mac80211 package. They are functional
indentical to the kernel patches but need two modifications.
1. CONFIG_ needs to be replaced with CPTCFG_
2. any new configuration option, need to be patched into .local-symbols
This change move the kernel patches to a seperate directory, add a helper
script to rebuild the OpenWRT/LEDE patches and updates those patches.
