If you have a backlight driven by a NXP PCF50633 MFD, say Y here to
enable its driver.
+config BACKLIGHT_AAT2870
+ tristate "AnalogicTech AAT2870 Backlight"
+ depends on BACKLIGHT_CLASS_DEVICE && MFD_AAT2870_CORE
+ help
+ If you have a AnalogicTech AAT2870 say Y to enable the
+ backlight driver.
+
endif # BACKLIGHT_CLASS_DEVICE
endif # BACKLIGHT_LCD_SUPPORT