ACPICA: Allow for more flexibility in _DSM args

ACPICA commit fbb651249ced5e19cc9c4452fec1408f595aa702

To eliminate annoying driver-side warnings.

ASWG ECR to follow soon.

Link: https://github.com/acpica/acpica/commit/fbb65124


Signed-off-by: Saket Dumbre <saket.dumbre@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>