x86 boot code comments typos

Fix comments typos in new x86 boot code.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/i386/boot/video-bios.c b/arch/i386/boot/video-bios.c
index afea46c..68e65d9 100644
--- a/arch/i386/boot/video-bios.c
+++ b/arch/i386/boot/video-bios.c
@@ -44,7 +44,7 @@
 		     : "+a" (ax)
 		     : : "ebx", "ecx", "edx", "esi", "edi");
 
-	do_restore = 1;		/* Assume video contents was lost */
+	do_restore = 1;		/* Assume video contents were lost */
 	new_mode = ax & 0x7f;	/* Not all BIOSes are clean with the top bit */
 
 	if (new_mode == mode)