Input: psmouse - remove unneeded '\n' from psmouse.proto parameter

The get parameter function should return a string without a life-feed.
Otherwise you'll see additional empty line in sysfs parameters file.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/mouse/psmouse-base.c

@@ -1673,7 +1673,7 @@ static int psmouse_get_maxproto(char *buffer, struct kernel_param *kp)
 {
 	int type = *((unsigned int *)kp->arg);
 
-	return sprintf(buffer, "%s\n", psmouse_protocol_by_type(type)->name);
+	return sprintf(buffer, "%s", psmouse_protocol_by_type(type)->name);
 }
 
 static int __init psmouse_init(void)