[POWERPC] arch/powerpc/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/boot/4xx.c b/arch/powerpc/boot/4xx.c
index ebf9e21..3d0e4f9 100644
--- a/arch/powerpc/boot/4xx.c
+++ b/arch/powerpc/boot/4xx.c
@@ -122,7 +122,7 @@
 	else
 		dpath = 4; /* 32 bits */
 
-	/* get adress pins (rows) */
+	/* get address pins (rows) */
 	val = mfdcr_sdram0(DDR0_42);
 
 	row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);