sh: Set a sensible default for the SH7786 pclk.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -466,7 +466,8 @@ config SH_PCLK_FREQ
 	default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
 			      CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
 			      CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
-			      CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
+			      CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG    || \
+			      CPU_SUBTYPE_SH7786
 	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 	default "66000000" if CPU_SUBTYPE_SH4_202
 	default "50000000"