lvm updates

Change-Id: Ia890d22b6ec6d4d69ebd4f13b5eb4dc7d151714d
obsolet gsm.mk

Change-Id: I6845d64b193f556b78dcb214920630a50bd89ef3
Revert "Misc makefile cleanups"

This reverts commit bcd7051afa7bbb189dcbcdbd164a043f36a7f563.