arm64: dts: qcom: qcs404: Update the compatible for watchdog timer

Update the compatible for QCS404 watchdog timer with proper
SoC specific compatible.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/757995875cc12d3f5a8f5fd5659b04653950970a.1576211720.git.saiprakash.ranjan@codeaurora.org


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>