arm64: dts: qcom: sdm845-mtp: switch to mbn firmware

arm64: dts: qcom: sdm845-mtp: switch to mbn firmware

We have switched most of devices to use mbn (squashed) firmware files
instead of spit mdt+bNN. Even this DT uses modem.mbn and a630_zap.mbn.
Let's switch adsp and cdsp firmware files to use .mbn format too.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230826221915.846937-4-dmitry.baryshkov@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>