soc: qcom: hab: add the guest_shm.h header file

This header file is used by HAB(Hypervisor ABstraction)
driver to implement its physical channels for communication
with the host OS.

Change-Id: I6708001a994961da16e0fb2dad6410028d0bba9a
Git-repo: https://github.com/qnx/virtregistry.git


Git-commit: 6ac2906a2df547598cbdffa35254cc01a3b41490
Signed-off-by: mkoch <mkoch@blackberry.com>
Signed-off-by: Yong Ding <yongding@codeaurora.org>
Signed-off-by: Sonic Zhang <sonic@codeaurora.org>