uboot: delete repetitive code. [1/1]

PD#SWPL-197446

Problem:
rollback times wrong after ab update.

Solution:
update_tries move to aml_board_late_init_tail.
delete repetitive code.

Verify:
t6d

Change-Id: I5b720772f4cd7d18f1cb6ea21ea1e9750193b103
Signed-off-by: Zhigang Yu <zhigang.yu@amlogic.com>
3 files changed