[PATCH] arch/alpha: Use ARRAY_SIZE macro

Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove a
duplicate of the macro.  Also remove some trailing whitespaces and needless
braces.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c
index 50eccde..b191cc7 100644
--- a/arch/alpha/kernel/time.c
+++ b/arch/alpha/kernel/time.c
@@ -233,7 +233,7 @@
 	index = cpu->type & 0xffffffff;
 
 	/* If index out of bounds, no way to validate.  */
-	if (index >= sizeof(cpu_hz)/sizeof(cpu_hz[0]))
+	if (index >= ARRAY_SIZE(cpu_hz))
 		return cc;
 
 	/* If index contains no data, no way to validate.  */