Enable TARGET_ARCH_LOWMEM

* Requires http://review.cyanogenmod.org/#/c/47756/

Change-Id: I6963776a1e48398f2ee6c0833af1e688beb0ff22
inc: set kernel override to incredikernel and comment it out.
Evervolv's kernel will be used by default

Change-Id: I4ad86a6c7ad76f2109cd8f82acd2587439e41f9e