ACPICA: Cleanup for all string-to-integer conversions

ACPICA commit e2e72a351201fd58e4694418859ae2c247dafca0

Consolidate multiple versions of strtoul64 to one common version.
limit possible bases to either 10 or 16.
Handles both implicit and explicit conversions.
Added a 2-character ascii-to-hex function for GPEs and buffers.
Adds a new file, utstrtoul64.c

Link: https://github.com/acpica/acpica/commit/e2e72a35
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c
index b7e9b3d..588ad14 100644
--- a/drivers/acpi/acpica/exconvrt.c
+++ b/drivers/acpi/acpica/exconvrt.c
@@ -124,9 +124,9 @@
 		 * of ACPI 3.0) is that the to_integer() operator allows both decimal
 		 * and hexadecimal strings (hex prefixed with "0x").
 		 */
-		status = acpi_ut_strtoul64((char *)pointer, flags,
-					   acpi_gbl_integer_byte_width,
-					   &result);
+		status = acpi_ut_strtoul64(ACPI_CAST_PTR(char, pointer),
+					   (acpi_gbl_integer_byte_width |
+					    flags), &result);
 		if (ACPI_FAILURE(status)) {
 			return_ACPI_STATUS(status);
 		}
@@ -632,7 +632,7 @@
 			 */
 			status =
 			    acpi_ex_convert_to_integer(source_desc, result_desc,
-						       16);
+						       ACPI_STRTOUL_BASE16);
 			break;
 
 		case ACPI_TYPE_STRING: