[PATCH v5 4/4] drm/tinydrm: select BACKLIGHT_LCD_SUPPORT, BACKLIGHT_CLASS_DEVICE

[kbuild test robot]

Hi Meghana,

[auto build test WARNING on drm/drm-next]
[also build test WARNING on v4.14-rc3 next-20170929]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Meghana-Madhyastha/drm-tinydrm-drm_of_find_backlight-helper/20171003-030102
base:   git://people.freedesktop.org/~airlied/linux.git drm-next
config: i386-randconfig-x078-201740 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

warning: (DRM && DRM_RADEON && DRM_AMDGPU && DRM_NOUVEAU && DRM_I915 && DRM_GMA500 && DRM_SHMOBILE && DRM_TILCDC && DRM_FSL_DCU && DRM_TINYDRM && DRM_PARADE_PS8622 && FB_BACKLIGHT && FB_ARMCLCD && FB_MX3 && USB_APPLEDISPLAY && FB_OLPC_DCON && ACPI_CMPC && SAMSUNG_Q10) selects BACKLIGHT_CLASS_DEVICE which has unmet direct dependencies (HAS_IOMEM && BACKLIGHT_LCD_SUPPORT)

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0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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