imx6: make kernel_oldconfig

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37134 3c298f89-4303-0410-b956-a3cf2f4a3e73
[package] uboot-envtools: upgrade to 2013.07-rc1

Support for writing on MMC devices has been added.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37135 3c298f89-4303-0410-b956-a3cf2f4a3e73
[package] uboot-envtools: add support for imx6 target

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@37136 3c298f89-4303-0410-b956-a3cf2f4a3e73