[SPARC]: Spelling fixes.

Spelling fixes in arch/sparc/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf.c
index dc8b598..27fdac9 100644
--- a/arch/sparc/prom/printf.c
+++ b/arch/sparc/prom/printf.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2002 Pete Zaitcev (zaitcev@yahoo.com)
  *
  * We used to warn all over the code: DO NOT USE prom_printf(),
- * and yet people do. Anton's banking code was outputing banks
+ * and yet people do. Anton's banking code was outputting banks
  * with prom_printf for most of the 2.4 lifetime. Since an effective
  * stick is not available, we deployed a carrot: an early printk
  * through PROM by means of -p boot option. This ought to fix it.