include: add more CPU flags for arm

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38649 3c298f89-4303-0410-b956-a3cf2f4a3e73
imx6: drop unused variable from Makefile

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38650 3c298f89-4303-0410-b956-a3cf2f4a3e73
sunxi: add new target

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38651 3c298f89-4303-0410-b956-a3cf2f4a3e73