atomictest: add NV12 support

Make atomictest support NV12 format.
Conversion from RGB to YUV is done in software using the same matrix
than for modetest.
Remove bbp parameter from create_sp_bo because it is link to plane format.

Change-Id: I2f844b24d11fca65310668522bca4427c2c5e4ef
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
5 files changed