[PATCH v1 2/2] drm/mediatek: add mipi_tx driver for mt8183

[kbuild test robot]

Hi Jitao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.0-rc4 next-20190221]
[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/Jitao-Shi/drm-mediatek-separate-mipi_tx-to-different-file/20190222-053659
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.2.0 make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

>> ERROR: "mt8183_mipitx_data" [drivers/gpu/drm/mediatek/mediatek-drm.ko] undefined!

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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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