Add firmware files for Adreno A20x (codenamed yamato), found in
Freescale i.MX51/i.MX53 and in some prehistoric Qualcomm Snapdragon
SoCs.

The firmware were generated from the header files from EfikaMX kernel
sources ([1]), which bear copyright by QUALCOMM Incorporated and have
BSD-3-Clause licence.

[1] https://github.com/genesi/linux-legacy/tree/master/drivers/mxc/amd-gpu



Cc: Rob Clark <robdclark@gmail.com>
Cc: Jonathan Marek <jonathan@marek.ca>
Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
[Fixed WHENCE license entry to avoid check_whence errors]
Signed-off-by: Josh Boyer <jwboyer@kernel.org>