kernel/3.1x: add split code for LZMA compressed kernel based firmwares

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39387 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: enable MTD_SPLIT_LZMA_FW option

It will be used for Compex devices.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39388 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: image: use a single firmware partition on Compex devices

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39389 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: add sysupgrade support for the Compex boards

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39390 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: image: generate sysupgrade images for the Compex boards

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39391 3c298f89-4303-0410-b956-a3cf2f4a3e73