lantiq: make kernel_oldconfig

Seems the existing kernel config for 3.8 was cp'ed from 3.7; this patch
is the result of "make kernel_oldconfig" with defaults for new options.

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36900 3c298f89-4303-0410-b956-a3cf2f4a3e73