phy: qcom-qmp-pcie: add pcs_misc sanity check

Make sure that the (otherwise) optional pcs_misc IO region has been
provided in case the configuration specifies a corresponding
initialisation table to avoid crashing with malformed device trees.

Note that the related debug message is now superfluous as the region is
only used when the configuration has a pcs_misc table.

Fixes: 421c9a0e ("phy: qcom: qmp: Add SDM845 PCIe QMP PHY support")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220916102340.11520-2-johan+linaro@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>