amdgpu/dc: fix a bunch of misc whitespace.

Dave Airlie amd-gfx 1 version Oct 3, 2017 In review

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#	Subject and files	Size	Replies
1/3	amdgpu/dc: fix a bunch of misc whitespace.`drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c` `drivers/gpu/drm/amd/display/dc/dc_types.h` `drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c` +3 more	+55 ~~-55~~	0 replies
2/3	amdgpu/dc: kfree already checks for NULL.`drivers/gpu/drm/amd/display/dc/basics/vector.c` `drivers/gpu/drm/amd/display/dc/bios/bios_parser.c` `drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c` +2 more	+9 ~~-22~~	0 replies
3/3	amdgpu/dm: don't use after free.`drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c`	+0 -1	1 reply

1 of 3 patches has a Reviewed-by or Acked-by.

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.