brcm47xx: update board detection patch

* Use different structs depending on the number of nvram variables to check.
* Add detection of ZTE H218N, this closes #14151.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37996 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel/3.10: move OpenWrt MTD options into a submenu

Separate OpenWrt specific MTD options from the mainline
option by moving those into a new submenu in the kernel
configuration interface.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37997 3c298f89-4303-0410-b956-a3cf2f4a3e73