sh: comment tidying for sh64->sh migration.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/cpu-sh5/cacheflush.h b/include/asm-sh/cpu-sh5/cacheflush.h
index 45d12d6..98edb5b 100644
--- a/include/asm-sh/cpu-sh5/cacheflush.h
+++ b/include/asm-sh/cpu-sh5/cacheflush.h
@@ -1,5 +1,5 @@
-#ifndef __ASM_SH64_CACHEFLUSH_H
-#define __ASM_SH64_CACHEFLUSH_H
+#ifndef __ASM_SH_CPU_SH5_CACHEFLUSH_H
+#define __ASM_SH_CPU_SH5_CACHEFLUSH_H
 
 #ifndef __ASSEMBLY__
 
@@ -31,5 +31,5 @@
 
 #endif /* __ASSEMBLY__ */
 
-#endif /* __ASM_SH64_CACHEFLUSH_H */
+#endif /* __ASM_SH_CPU_SH5_CACHEFLUSH_H */