spelling fixes: arch/i386/

Spelling fixes in arch/i386/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/arch/x86/kernel/summit_32.c b/arch/x86/kernel/summit_32.c
index 91c7acc..72f4634 100644
--- a/arch/x86/kernel/summit_32.c
+++ b/arch/x86/kernel/summit_32.c
@@ -64,7 +64,7 @@
 
 	switch (rio_devs[wpeg_num]->type){
 	case CompatWPEG:
-		/* The Compatability Winnipeg controls the 2 legacy buses,
+		/* The Compatibility Winnipeg controls the 2 legacy buses,
 		 * the 66MHz PCI bus [2 slots] and the 2 "extra" buses in case
 		 * a PCI-PCI bridge card is used in either slot: total 5 buses.
 		 */