sh: Add SH7720 CPU support.

This adds support for the SH7720 (SH3-DSP) CPU.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig.debug b/arch/sh/Kconfig.debug
index 6eb31bc..c870f5f 100644
--- a/arch/sh/Kconfig.debug
+++ b/arch/sh/Kconfig.debug
@@ -34,6 +34,7 @@
 	default "0xfffe9800" if CPU_SUBTYPE_SH7206
 	default "0xf8420000" if CPU_SUBTYPE_SH7619
 	default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
+	default "0xa4430000" if CPU_SUBTYPE_SH7720
 	default "0xffc30000" if CPU_SUBTYPE_SHX3
 	default "0xffe80000" if CPU_SH4
 	default "0x00000000"