drm/amd/display: fix duplicated inclusion

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Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
kernel test robot 2021-10-08 10:40:34 -04:00 • committed by Alex Deucher
commit 40348baedf