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/tools/mach-types b/arch/sh/tools/mach-types
index 69a9aee..284b7e8 100644
--- a/arch/sh/tools/mach-types
+++ b/arch/sh/tools/mach-types
@@ -8,6 +8,7 @@
 SE			SH_SOLUTION_ENGINE
 HIGHLANDER		SH_HIGHLANDER
 RTS7751R2D		SH_RTS7751R2D
+RSK			SH_RSK
 
 #
 # List of companion chips / MFDs.