udisk2: fix build issue with missing depends

checking for sys/acl.h... no
| configure: error: *** ACL headers not found.
| NOTE: The following config.log files may provide further information.

add acl to DEPENDS

Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>