drivers/video/geode/lxfb_core.c: fix lxfb_setup warning

drivers/video/geode/lxfb_core.c: In function 'lxfb_setup':
drivers/video/geode/lxfb_core.c:564: warning: unused variable 'opt'
Signed-off-by: NEugene Teo <eugeneteo@kernel.sg>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

drivers/video/geode/lxfb_core.c

@@ -566,12 +566,7 @@ static int __init lxfb_setup(char *options)
 	if (!options || !*options)
 		return 0;
 
-	while (1) {
-		char *opt = strsep(&options, ",");
-
-		if (opt == NULL)
-			break;
-
+	while ((opt = strsep(&options, ",")) != NULL) {
 		if (!*opt)
 			continue;