The bindings for Altera and Imagination extensions are the same as for
the original Synopsys Designware Mobile Storage Host Controller.
Integrate them into Synopsys bindings to have dtschema coverage.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211227133558.135185-3-krzysztof.kozlowski@canonical.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>