linux-phytec-fsl

MAINTAINERS: fix ssbi pattern

Incorrect pattern used, it's not a directory, it's a file.  Fix it.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>