sh: comment tidying for sh64->sh migration.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/lib64/udelay.c b/arch/sh/lib64/udelay.c
index 4c71a74..23c7d17 100644
--- a/arch/sh/lib64/udelay.c
+++ b/arch/sh/lib64/udelay.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh64/lib/udelay.c
+ * arch/sh/lib64/udelay.c
  *
  * Delay routines, using a pre-computed "loops_per_jiffy" value.
  *