All r8a7791 boards are now used with multiplatform kernels only. We can
remove all the unused r8a7791 legacy device and clock registration code.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>