ACPICA: Add "Windows 2018" string in the _OSI support

Latest windows string.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/utosi.c

@@ -70,6 +70,7 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
 	{"Windows 2016", NULL, 0, ACPI_OSI_WIN_10_RS1},	/* Windows 10 version 1607 - Added 12/2017 */
 	{"Windows 2017", NULL, 0, ACPI_OSI_WIN_10_RS2},	/* Windows 10 version 1703 - Added 12/2017 */
 	{"Windows 2017.2", NULL, 0, ACPI_OSI_WIN_10_RS3},	/* Windows 10 version 1709 - Added 02/2018 */
+	{"Windows 2018", NULL, 0, ACPI_OSI_WIN_10_RS4},	/* Windows 10 version 1803 - Added 11/2018 */
 
 	/* Feature Group Strings */
 

include/acpi/actypes.h

@@ -1273,6 +1273,7 @@ typedef enum {
 #define ACPI_OSI_WIN_10_RS1             0x0E
 #define ACPI_OSI_WIN_10_RS2             0x0F
 #define ACPI_OSI_WIN_10_RS3             0x10
+#define ACPI_OSI_WIN_10_RS4             0x11
 
 /* Definitions of getopt */