Fix building when not using build scirpts:  Currently when not building

with the included build scripts the build will fail due to zram kernel
module and/or script not being found.  This affects grouper and tilapia
and this patch fixes that.

If not using build scripts the default AOSP kernel will be used instead
of SaberMod's kernel.

Signed-off-by:  Paul Beeler <sparksco@gmail.com>