FROMLIST: gunyah: Common types and error codes for Gunyah hypercalls

Add architecture-independent standard error codes, types, and macros for
Gunyah hypercalls.

Bug: 338347082
Link: https://lore.kernel.org/all/20240222-gunyah-v17-3-1e9da6763d38@quicinc.com/


Change-Id: I82d22491fa84ff667e8c680305f4b498b894b1ad
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>