Add ifeq flag to MINIGZIP for devices like tf101

that can not use lzma to compress the kernel without causing problems
but can not compile a recovery without a compression like lzma
BOARD_NEEDS_LZMA_MINIGZIP := true

Change-Id: I0cb8b126234fc5d20ceee83c2eb0266c37e4ff0f
merge changes from Omni 4.4 into local branch