test(handoff): fix register convention value on test_firmware_handoff()

According to recently firmware handsoff spec [1]'s "Register usage at handoff
boundary", Transfer List's signature value was changed from 0x40_b10b
(3 bytes) to 4a0f_b10b (4 bytes).

As updating of TL's signature, register value of x1/r1 should be:

In aarch32's r1 value should be
    R1[23:0]: set to the TL signature (4a0f_b10b -> masked range value: 0f_b10b)
    R1[31:24]: version of the register convention ==  1
and
In aarch64's x1 value should be
    X1[31:0]: set to the TL signature (4a0f_b10b)
    X1[39:32]: version of the register convention ==  1
    X1[63:40]: MBZ
(See the [2] and [3]).

Therefore, it requires to separate mask and shift value for register
convention version field when sets each r1/x1.

Currently, TRNASFER_LIST test runs only in aarch64.
So, change the assert value in test_firmware_handoff() as
aarch64's x1 value when transfer list deliver.

Link: https://github.com/FirmwareHandoff/firmware_handoff [1]
Link: https://github.com/FirmwareHandoff/firmware_handoff/issues/32 [2]
Link: https://github.com/FirmwareHandoff/firmware_handoff/commit/5aa7aa1d3a1db75213e458d392b751f0707de027 [3]

Change-Id: Ibc86963cc5abda3aae4cb8fe34533be250e3dd95
Signed-off-by: Levi Yun <yeoreum.yun@arm.com>
2 files changed