arch/x86/smbios: Update SMBIOS type 16 Extended Maximum Capacity

Update Extended Maximum Capacity field in SMBIOS type 16 so that
maximum dimm size can be over 2TB.

Tested=Execute "dmidecode -t 16" to check maximum capacity is over 2TB.

Signed-off-by: Tim Chu <Tim.Chu@quantatw.com>
Change-Id: I61901c815f9d0daae102e5077a116c0de87240ef
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49828
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/include/smbios.h

@@ -829,6 +829,8 @@ enum {
 	SMBIOS_EVENTLOG_STATUS_FULL  = 2, /* Bit 1 */
 };
 
+#define SMBIOS_USE_EXTENDED_MAX_CAPACITY	(1 << 31)
+
 struct smbios_type16 {
 	u8 type;
 	u8 length;