sh: Allow SH-3 and SH-5 to use common headers.

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

arch/sh/include/cpu-sh2/cpu/rtc.h

@@ -1,8 +0,0 @@
-#ifndef __ASM_SH_CPU_SH2_RTC_H
-#define __ASM_SH_CPU_SH2_RTC_H
-
-#define rtc_reg_size		sizeof(u16)
-#define RTC_BIT_INVERTED	0
-#define RTC_DEF_CAPABILITIES	0UL
-
-#endif /* __ASM_SH_CPU_SH2_RTC_H */