dt-bindings: pinctrl: qcom: Add ipq6018 pinctrl bindings

Add device tree binding Documentation details for ipq6018
pinctrl driver.

Co-developed-by: Rajkumar Ayyasamy <arajkuma@codeaurora.org>
Signed-off-by: Rajkumar Ayyasamy <arajkuma@codeaurora.org>
Co-developed-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Signed-off-by: Selvam Sathappan Periakaruppan <speriaka@codeaurora.org>
Co-developed-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Link: https://lore.kernel.org/r/1579439601-14810-2-git-send-email-sricharan@codeaurora.org


Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>