tests/kms_ccs: CCS Clear Color test

The patch proposes a method to test CCS with clear color
capability.

The test paints a solid color on primary fb and a small sprite fb.
These are cleared with fast clear feature. A crc is captured and
compared against the reference.

v2: Modify _gen9_render_copyfunc to support fast clear (Matt)
    Enable fast clear bit on 3D sequence (Matt)
    Add helper function to figure out clear color modifier (Matt)
v3: Remove unrelated line additions/removes
v4: Fast clear with color (Imre)
v5: Write raw 32-bit color values to register (Imre)
    Require 32-bit color format
v6: Rebase to use batchbuffer without libdrm dependency
v7: Enable clear color (Nanley)
v8: Various cleanups (Imre)
v9: Splitting patch for smaller hunks (Imre)
v10: Remove switch from CCS CC modifier check (Imre)
     Color map conversion (Imre)
     Separate function to check CCS CC plane (Imre)
     Removed left-over comment (Imre)
     Replace inte_bb_reset() with intel_bb_sync() and
     intel_bb_destroy() when cleaning up (Imre)
     Fix logic to test CCS clear color only with
     XRGB8888 format (Imre)
     Move fast clear to it's own function (Imre)

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>

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