ARM: shmobile: Move rcar-gen2.h, cleanup r8a7790 case

Change location of rcar-gen2.h so it can be used as #include "rcar-gen2.h"
instead of the old style #include <mach/rcar-gen2.h>. Also clean up
the r8a7790 case to follow the same style as r8a7791.

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/setup-r8a7791.c

@@ -27,10 +27,10 @@
 #include <linux/serial_sci.h>
 #include <linux/sh_timer.h>
 #include <mach/r8a7791.h>
-#include <mach/rcar-gen2.h>
 #include <asm/mach/arch.h>
 #include "common.h"
 #include "irqs.h"
+#include "rcar-gen2.h"
 
 static const struct resource pfc_resources[] __initconst = {
 	DEFINE_RES_MEM(0xe6060000, 0x250),