ArmPkg/Library: update xferlist version to 2

The Firmware Handoff specification has withdrawn
the use of the “XOR” checksum and updated
the checksum calculation to use “SUM” [0].
Accordingly, libtl has also been updated to reflect this change [1].

The “XOR” checksum calculation existed in version 1;
however, as mentioned above, it has been withdrawn, and
TF-A always provides the checksum using the “SUM” calculation.

Therefore, the xferlist version is updated to version 2.

Link: FirmwareHandoff/firmware_handoff#81 [0]
Link: https://review.trustedfirmware.org/c/shared/transfer-list-library/+/46033 [1]
Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>

Author: LeviYeoReum

ArmPkg/Include/IndustryStandard/ArmTransferList.h

@@ -20,7 +20,7 @@
 #include <Base.h>
 #include <Uefi.h>
 
-#define ARM_FW_HANDOFF_PROTOCOL_VERSION  1
+#define ARM_FW_HANDOFF_PROTOCOL_VERSION  2
 
 #define TRANSFER_LIST_ALIGNMENT     8             // 8 byte alignment
 #define TRANSFER_LIST_SIGNATURE_64  (0x4a0fb10b)