[ARM] spelling fixes

Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c
index 8caee68..5bb348e 100644
--- a/arch/arm/mach-omap1/pm.c
+++ b/arch/arm/mach-omap1/pm.c
@@ -438,7 +438,7 @@
 		omap_writew(0, ULPD_SOFT_DISABLE_REQ_REG);
 
 	/*
-	 * Reenable interrupts
+	 * Re-enable interrupts
 	 */
 
 	local_irq_enable();