sh: Add support for SH7786 CPU subtype.

This adds preliminary support for the SH7786 CPU subtype.

While this is a dual-core CPU, only UP is supported for now. L2 cache
support is likewise not yet implemented.

More information on this particular CPU subtype is available at:

	http://www.renesas.com/fmwk.jsp?cnt=sh7786_root.jsp&fp=/products/mpumcu/superh_family/sh7780_series/sh7786_group/

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 78a01d7..0ae0968 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -356,6 +356,13 @@
 	select ARCH_SPARSEMEM_ENABLE
 	select SYS_SUPPORTS_NUMA
 
+config CPU_SUBTYPE_SH7786
+	bool "Support SH7786 processor"
+	select CPU_SH4A
+	select CPU_SHX2
+	select ARCH_SPARSEMEM_ENABLE
+	select SYS_SUPPORTS_NUMA
+
 config CPU_SUBTYPE_SHX3
 	bool "Support SH-X3 processor"
 	select CPU_SH4A