Currently as a result of templating from x86 code gcs_alloc_thread_stack()Acked-by: Deepak Gupta <debug@xxxxxxxxxxxx>
returns a pointer as an unsigned int however on arm64 we don't actually use
this pointer value as anything other than a pass/fail flag. Simplify the
interface to just return an int with 0 on success and a negative error code
on failure.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>