sh: Consolidate rsk7203/7201 in to a new mach-rsk.

RSK+ platforms have quite a few characteristics in common, so roll them
together in to a shiny new RSK mach-type.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/mach-rsk/Makefile b/arch/sh/boards/mach-rsk/Makefile
new file mode 100644
index 0000000..498da75
--- /dev/null
+++ b/arch/sh/boards/mach-rsk/Makefile
@@ -0,0 +1,2 @@
+obj-y				:= setup.o
+obj-$(CONFIG_SH_RSK7203)	+= devices-rsk7203.o