arm: dts: qcom: Sync pinctrl DT nodes with Linux bindings

Currently for all Qcom SoCs/boards there are separate compatibles for
GPIO and pinctrl. But this is inconsistent with official (upstream) Linux
bindings which requires only a single compatible "qcom,<SoC name>-pinctrl"
and there is no such compatible property as "qcom,tlmm-<SoC name>".

So fix this inconsistency for Qcom SoCs in order to comply with upstream
DT bindings. This is done via removing compatibles from "msm_gpio" driver
and via binding to "msm_gpio" driver from pinctrl driver in case
"gpio-controller" property is specified for pinctrl node.

Suggested-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
diff --git a/arch/arm/dts/qcs404-evb.dts b/arch/arm/dts/qcs404-evb.dts
index f127f53..0639af8 100644
--- a/arch/arm/dts/qcs404-evb.dts
+++ b/arch/arm/dts/qcs404-evb.dts
@@ -38,7 +38,7 @@
 		compatible = "simple-bus";
 
 		pinctrl_north@1300000 {
-			compatible = "qcom,tlmm-qcs404";
+			compatible = "qcom,qcs404-pinctrl";
 			reg = <0x1300000 0x200000>;
 
 			blsp1_uart2: uart {