gpu-ion: Add ION support

Taken from Lexmaster's kernel
Signed-off-by: helicopter88 <johnlemon.lol@gmail.com>

Change-Id: I4cdbe443f672c45ddaef67c146e855c8ec341306
mach-msm: ION fix up

Change-Id: I37f132a71e10c93c42f7cea4e7c7b63a6fa6f5a2
Signed-off-by: helicopter88 <johnlemon.lol@gmail.com>