tree de05f1909883b36d6fc7c0993522403713aba307
parent fb3ad54d9f6db6133e98e9f89f350d640c02776c
author Nam Cao <namcao@linutronix.de> 1708519304 +0100
committer Tom Rini <trini@konsulko.com> 1709565947 -0500

bootstd: support scanning a single partition

The "bootflow" command currently doesn't support scanning a single
partition. This is inconvenient in setups with multiple bootable
partitions within a single disk, but only one is desired.

Support scanning a single disk partition. Specifically, support the
syntax:
	bootflow scan mmc1:4
which scans only mmc device 1, partition 4.

Signed-off-by: Nam Cao <namcao@linutronix.de>