brcm2708: missing symbols caused a build fail

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 44011

target/linux/brcm2708/config-3.14

@@ -23,6 +23,7 @@ CONFIG_AVERAGE=y
 # CONFIG_BACKLIGHT_ADP8860 is not set
 # CONFIG_BACKLIGHT_ADP8870 is not set
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
+# CONFIG_BACKLIGHT_CLASS_DEVICE is not set
 CONFIG_BCM2708_DMAER=y
 CONFIG_BCM2708_GPIO=y
 # CONFIG_BCM2708_NOL2CACHE is not set
@@ -148,6 +149,7 @@ CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_XZ is not set
 CONFIG_KTIME_SCALAR=y
 # CONFIG_LCD_AMS369FG06 is not set
+# CONFIG_LCD_CLASS_DEVICE is not set
 # CONFIG_LCD_L4F00242T03 is not set
 # CONFIG_LCD_LD9040 is not set
 # CONFIG_LCD_LMS283GF05 is not set