MAINTAINERS: update picoxcell patterns

Fix the picoxcell patterns, add the dts directory too.

Signed-off-by: Joe Perches <[email protected]>
Acked-by: Jamie Iles <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
1 file changed