devices-xxxx : ION check for video driver.

Add variable to check if ion heaps are avaliable for these targets
7x30,8660,8960, If ion heap is avaliable then allocate the memory
from ion heap else use the pmem heap.

Change-Id: I7811d70ec48bc89c61bfd92d1d6b9762facd2455
Signed-off-by: Deepak Kotur <dkotur@codeaurora.org>
4 files changed