pinctrl: msm: Use dynamic GPIO numbering

The base of the TLMM gpiochip should not be statically defined as 0, fix
this to not artificially restrict the existence of multiple pinctrl-msm
devices.

Fixes: f365be092572 ("pinctrl: Add Qualcomm TLMM driver")
Reported-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/pinctrl-msm.c

@@ -818,7 +818,7 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
 		return -EINVAL;
 
 	chip = &pctrl->chip;
-	chip->base = 0;
+	chip->base = -1;
 	chip->ngpio = ngpio;
 	chip->label = dev_name(pctrl->dev);
 	chip->parent = pctrl->dev;