FROMGIT: pci: dwc: qcom: Add QCS404 compatible

Change-Id: Ia2eddd02e164de606f97e1988643bd268f12645f
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
(cherry picked from commit 914c2f7b72496ef71dd3604773d4eebeae619b54
https://git.linaro.org/people/niklas.cassel/kernel.git/commit/?h=niklas-qcs404-pcie-4.14

)
Signed-off-by: Prashanth Vadde <pvadde@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/c/1343765


Reviewed-by: Zhihong Yu <zhihongyu@chromium.org>
Tested-by: Zhihong Yu <zhihongyu@chromium.org>