soc: qcom: hab: support particular input buf types in KHAB path

There are some risks to use get/put_page at such single page level,
for now we just accept dma file/fd as input in KHAB's export.

Change-Id: Ib8b8e1c5da2d792b8e535fe95ee95384a304e18d
Signed-off-by: Hui Li <hul@codeaurora.org>