uboot: add defenv sw_version for swupdate [1/1]

PD#SWPL-195428

Problem:
could not get sw_version after swupdate

Solution:
add sw_version into defenv

Verify:
local

Change-Id: Ic14bc5e51f658732a26baa0337f899a80c31dbe5
Signed-off-by: Jiacai.Liu <jiacai.liu@amlogic.com>
1 file changed