dt-bindings: remoteproc: qcom: Add Q6V5 Modem PIL binding for QCS404

Add a new modem compatible string for Qualcomm QCS404 SoCs

Signed-off-by: Govind Singh <govinds@codeaurora.org>
Signed-off-by: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1611859695-11824-3-git-send-email-gokulsri@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>