ACPICA: Divergences: reduce access size definitions

ACPICA commit cf27b3c98883d2a15d932016792fcb8272ace96d

The following commit introduces definition of access width to ACPICA.
  Commit: 2bece49394
  Subject: ACPI: SPCR: Use access width to determine mmio usage

Actually the access bit width can be calculated via access width. It
would be better to define a macro calculating bit width rather than
defining fixed values. This patch thus cleans up the definitions to
reduce divergences.

Link: https://github.com/acpica/acpica/commit/cf27b3c9
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/spcr.c

@@ -95,16 +95,17 @@ int __init parse_spcr(bool earlycon)
 	}
 
 	if (table->serial_port.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) {
-		switch (table->serial_port.access_width) {
+		switch (ACPI_ACCESS_BIT_WIDTH((
+			table->serial_port.access_width))) {
 		default:
 			pr_err("Unexpected SPCR Access Width.  Defaulting to byte size\n");
-		case ACPI_ACCESS_SIZE_BYTE:
+		case 8:
 			iotype = "mmio";
 			break;
-		case ACPI_ACCESS_SIZE_WORD:
+		case 16:
 			iotype = "mmio16";
 			break;
-		case ACPI_ACCESS_SIZE_DWORD:
+		case 32:
 			iotype = "mmio32";
 			break;
 		}