dt-bindings: Add the yaml bindings for EUD

Documentation for Embedded USB Debugger(EUD) device tree
bindings in yaml format.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Souradeep Chowdhury <quic_schowdhu@quicinc.com>
Link: https://lore.kernel.org/r/e6a490c5eab9750decd5204d284b9b163b9be187.1644339918.git.quic_schowdhu@quicinc.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>