more trivial signedness fixes in drivers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/acpi/toshiba_acpi.c b/drivers/acpi/toshiba_acpi.c
index 13369b4..a736ef7 100644
--- a/drivers/acpi/toshiba_acpi.c
+++ b/drivers/acpi/toshiba_acpi.c
@@ -362,7 +362,7 @@
 	int crt_out = -1;
 	int tv_out = -1;
 	u32 hci_result;
-	int video_out;
+	u32 video_out;
 
 	/* scan expression.  Multiple expressions may be delimited with ;
 	 *