[radeon-alex:drm-next-4.20-wip 89/317] drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vega20_smumgr.c:34:26: fatal error: vega20_hwmgr.h: No such file or directory

[kbuild test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-4.20-wip
head:   8901a65f080ad6f4d7c3ef9f23c6f3a0e3e194aa
commit: f4eac80add11572fe36800c045a1ed1fd9132ec0 [89/317] drm/amd/powerplay: add the smu manager for vega20 (v2)
config: i386-randconfig-s1-201836 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        git checkout f4eac80add11572fe36800c045a1ed1fd9132ec0
        # save the attached .config to linux build tree
        make ARCH=i386 

Note: the radeon-alex/drm-next-4.20-wip HEAD 8901a65f080ad6f4d7c3ef9f23c6f3a0e3e194aa builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vega20_smumgr.c:34:26: fatal error: vega20_hwmgr.h: No such file or directory
    #include "vega20_hwmgr.h"
                             ^
   compilation terminated.

vim +34 drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/vega20_smumgr.c

  > 34	#include "vega20_hwmgr.h"
    35	

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