sh: Add on-chip RTC support for SH7722.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/cpu-sh4/cpu/rtc.h b/arch/sh/include/cpu-sh4/cpu/rtc.h
index 25b1e6a..95e6fb7 100644
--- a/arch/sh/include/cpu-sh4/cpu/rtc.h
+++ b/arch/sh/include/cpu-sh4/cpu/rtc.h
@@ -1,7 +1,7 @@
 #ifndef __ASM_SH_CPU_SH4_RTC_H
 #define __ASM_SH_CPU_SH4_RTC_H
 
-#ifdef CONFIG_CPU_SUBTYPE_SH7723
+#if defined(CONFIG_CPU_SUBTYPE_SH7722) || defined(CONFIG_CPU_SUBTYPE_SH7723)
 #define rtc_reg_size		sizeof(u16)
 #else
 #define rtc_reg_size		sizeof(u32)