imx6: drop inittab

It's the same as in base-files package.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38077 3c298f89-4303-0410-b956-a3cf2f4a3e73
imx6: update config

* enable PERF_EVENTS
* enable REGULATOR_ANATOP
* enable VMSPLIT_2G

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38078 3c298f89-4303-0410-b956-a3cf2f4a3e73