staging: android: ion: Add support for SPSS vmids

Ensure ION secure heaps support allocating secure memory
from VMID_CP_SPSS_SP, VMID_CP_SPSS_SP_SHARED and VMID_CP_SPSS_HLOS_SHARED
vmids.

Change-Id: Id4c48a0a55394187e424b263b01b798ccf28655e
Signed-off-by: Liam Mark <lmark@codeaurora.org>