tree a20b3c0fc141ed265de79efda7615c59ab8ccbeb
parent 83d442f5fdb4204c2cedadaee0e3654a142e2ac8
author Thang Q. Nguyen <thang@os.amperecomputing.com> 1657027508 +0000
committer Thang Q. Nguyen <thang@os.amperecomputing.com> 1657766743 +0000

meta-ampere: mtjade: fix hostfw update sometime fail

When executing Host UEFI firmware update, the ampere_flash_bios.sh check
for pnor partition available. If not, it binds the driver so that can
access the device to flash.
There is a case that the driver is already bound but no pnor device
available. This makes the Host firmware flash fail.
This commit adds codes to check for this case and unbind the driver so
that the next binding success.

Tested:
1. Flash UEFI firmware successful in above case

Signed-off-by: Thang Q. Nguyen <thang@os.amperecomputing.com>
Change-Id: I410621cf916d9ae139f420469357e4687ae138ab