ARM: */timer.c: fix spelling and vertical alignment

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/arm/cpu/arm920t/a320/timer.c b/arch/arm/cpu/arm920t/a320/timer.c
index bb65593..d69dbff 100644
--- a/arch/arm/cpu/arm920t/a320/timer.c
+++ b/arch/arm/cpu/arm920t/a320/timer.c
@@ -155,7 +155,7 @@
 	timestamp = t;
 }
 
-/* delay x useconds AND perserve advance timstamp value */
+/* delay x useconds AND preserve advance timestamp value */
 void udelay(unsigned long usec)
 {
 	long tmo = usec * (TIMER_CLOCK / 1000) / 1000;