gpu: ion: implement compat ioctls from linux 3.4

Change-Id: Icaa5701f57cbb92c9ec011106cf11685373bdbc1
Signed-off-by: zwliew <zhaoweiliew@gmail.com>
exynos: ion: refactor ion config to fit ported ion apis

Change-Id: Iadaebe1ed8a001e2109b8ccad7eae2b343d528ed
Signed-off-by: zwliew <zhaoweiliew@gmail.com>