All r8a73a4 boards are now used with multiplatform kernels only. We can
remove all the unused r8a73a4 legacy device and clock registration code.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: NUlrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>