ArmPkg/Library: update xferlist version to 2

Firmware handsoff specification withdraws "XOR" checksum usage
and update the specification checksum calculation with "SUM" [0].
So the libtl also updates with this change [1]

The "XOR" calculation was existed in v1,
but as above mentioned, it's withdrown, and
TF-A always gives the checksum with "SUM" calculation.

Therefore, just update the xferlist version to 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)