Add TEE driver support

Modify the Linux ffarpc caller and service locator to use the FF-A TEE
driver instead of the DebugFS proof-of-concept driver.

Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
Change-Id: I36f9dc56f26449d6dfdf72bfcbb431459304fcd7
9 files changed