gpu: ion: Add API to get the buffer flags

Clients may want to know what the existing flags are on a
handle for mapping, cache flushing or other purposes. Add
an API to get those flags.

Change-Id: I2d8c93194d1fc940042529b8851ebecf35d6e3de
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
2 files changed