mm: Allow lowmem to be non contiguous and mixed.

Any image that is expected to have a lifetime of
the entire system can give the virtual address
space back for use in vmalloc.

Change-Id: I81ce848cd37e8573d706fa5d1aa52147b3c8da12
Signed-off-by: Neeti Desai <neetid@codeaurora.org>
freezer: shorten freezer sleep time using exponential backoff

Change-Id: I8cffa348cc380bb1ae067ec60a24daa4546e3299