staging:panel:panel.c Fix typo in staging:panel

The below patch fixes a typo I found while reading.
Signed-off-by: NJustin P. Mattock <justinmattock@gmail.com>
Cc: Willy Tarreau <willy@meta-x.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/panel/panel.c

@@ -754,7 +754,7 @@ static void lcd_backlight(int on)
 	if (lcd_bl_pin == PIN_NONE)
 		return;
 
-	/* The backlight is activated by seting the AUTOFEED line to +5V  */
+	/* The backlight is activated by setting the AUTOFEED line to +5V  */
 	spin_lock(&pprt_lock);
 	bits.bl = on;
 	panel_set_bits();