arm64: dts: qcom: sc7180: Add qspi compatible

Add "qcom,sc7180-qspi" compatible in qspi node

Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/1632997450-32293-3-git-send-email-rajpat@codeaurora.org