dt-bindings: pinctrl: qcom,sdx65-tlmm: add pcie_clkreq function

DTS and driver already support pcie_clkreq function for a pin.  Add it
to fix dtbs_check warning:

  qcom-sdx65-mtp.dtb: pinctrl@f100000: pcie-ep-clkreq-default-state: 'oneOf' conditional failed, one must be fixed:
    'bias-disable', 'drive-strength', 'function', 'pins' do not match any of the regexes: '-pins$', 'pinctrl-[0-9]+'
    'pcie_clkreq' is not one of ['blsp_uart1', 'blsp_spi1', ... 'gpio']

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Linus Walleij <[email protected]>

Author: krzk

Documentation/devicetree/bindings/pinctrl/qcom,sdx65-tlmm.yaml

@@ -85,7 +85,7 @@ $defs:
                 qdss_tracectl_a, dac_calib13, qdss_traceclk_a, dac_calib14,
                 dac_calib15, hdmi_rcv, dac_calib16, hdmi_cec, pwr_modem,
                 dac_calib17, hdmi_ddc, pwr_nav, dac_calib18, pwr_crypto,
-                dac_calib19, hdmi_hot, dac_calib20, dac_calib21, pci_e0,
+                dac_calib19, hdmi_hot, dac_calib20, dac_calib21, pci_e0, pcie_clkreq,
                 dac_calib22, dac_calib23, dac_calib24, tsif1_sync, dac_calib25,
                 sd_write, tsif1_error, blsp_spi2, blsp_uart2, blsp_uim2,
                 qdss_cti, blsp_i2c2, blsp_spi3, blsp_uart3, blsp_uim3, blsp_i2c3,