inc: set TARGET_ARCH_LOWMEM

Change-Id: I83b19c7ab1a3c2171721076da7e62e02b2add28c
Revert "inc: 4.3 bringup and cleanup"

This reverts commit 5c104d64352634da1e4a5116a64d590065312bd1.

Conflicts:
	full_inc.mk

Change-Id: I8e5c1ba6c598d33780190abaf9bca9c7e3010473