ion: Bring ion header in sync with jb_2.5 userspace [JB_MR1_CHOCOLATE]

Change-Id: I3e5d94dcdb8f56be245c7f6a6d353ef9aa44d93c
Signed-off-by: Shruthi Krishna <skrish@codeaurora.org>
gpu: ion: fix some missing defines for ion mini upgrade

Change-Id: Iaa23687f1014c03b9064239b291a6b4200de26d4
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>