pinctrl: qcom: Add SM8450 pinctrl driver

This adds pincontrol driver for tlmm block found in SM8450 SoC

This patch is based on initial code downstream by
Elliot Berman <eberman@codeaurora.org>

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211201072434.3968768-3-vkoul@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>