Update gralloc to use new ion flag

Switches cached allocations from faulting in mappings, to
allocating them at mmap time.  Caches now have to be managed manually
from gralloc lock/unlock

Bug: 6854979
Change-Id: I2fa31719c70bb1ce836ca34c49cb34ab509ff1db
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
2 files changed