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
ar71xx: fix bad RX sensitivity on newer TL-WDR4300 boards

On recent TL-WDR4300 boards the external LNAs of the 2.4GHz
interface are connected to GPIO lines. Because these GPIO
lines are disabled by default, the RX sensitivity of the
device is quite bad.

Setup the GPIOs of the external LNAs to fix the issue.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39392 3c298f89-4303-0410-b956-a3cf2f4a3e73