ARM: renesas: Rename arch-/mach-rmobile to arch-/mach-renesas

Rename arch-rmobile to arch-renesas and mach-rmobile to mach-renesas
because all the chips are made by Renesas, while only a subset of
them is from the R-Mobile line.

Use the following command to perform the rename, with manual move of
the directories using git mv and manual fix up to arch/arm/Makefile:

"
$ git grep -l '\<\(arch\|mach\)-rmobile\>' | \
  xargs -I {} sed -i 's@\<\(arch\|mach\)-rmobile\>@\1-renesas@g' {}
$ sed -i 's@rmobile@renesas@' board/*/*/Kconfig
"

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 0b08ca1..cd9b2d4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -497,7 +497,7 @@
 M:	Marek Vasut <marek.vasut+renesas@mailbox.org>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-sh.git
-F:	arch/arm/mach-rmobile/
+F:	arch/arm/mach-renesas/
 F:	drivers/clk/renesas/
 F:	drivers/gpio/gpio-rcar.c
 F:	drivers/i2c/rcar_*