clk: qcom: gcc-sdxpoorwills: add USB/PCIe reference clocks

Add PCIe and USB reference clocks to the list of supported
clocks. Also add USB3 PHY BCR addresses to the list of
supported resets.

CRs-Fixed: 2154911
Change-Id: I9c3dba5d4003ff393459fca8a5a99381a50c1f85
Signed-off-by: Vicky Wallace <vwallace@codeaurora.org>