It mis-matched "SanDisk" or "Disk Flags" before, which caused unexpected
error.
(From OE-Core rev: a68ac76c1b6ed4c1a2fbc944c5021c89fd26217f)
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>