acpi: Tweak _DSM method evaluation helpers.

• Use ACPI style for _DSM evaluation helper parameter types.
• Constify UUID parameter.
• Increase size of returned DSM function bitmap by acpi_DSMQuery() up to 64 items. Old limit of 8 functions is not sufficient for JEDEC JESD245 NVDIMMs.
• Add new acpi_EvaluateDSMTyped() helper which performs additional return value type check as compared with acpi_EvaluateDSM().
• Reimplement acpi_EvaluateDSM() on top of the acpi_EvaluateDSMTyped() call.

Reviewed by: scottph, manu
Differential Revision: https://reviews.freebsd.org/D26602