drivers/base: fix devres handling for master device

We weren't handling the devres issues for the master device failing a
bind, or being unbound properly.  Add a devres group to contain these,
and release the resources at the appropriate points.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>