arm: dts: qcom: Add generic PMIC gpio/MPP compat strings

Add the generic compatible strings for the PMIC gpio and MPP
modules found on qcom based PMICs.

Cc: <devicetree@vger.kernel.org>
Cc: "Ivan T. Ivanov" <iivanov@mm-sol.com>
Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
diff --git a/arch/arm/boot/dts/qcom-pm8841.dtsi b/arch/arm/boot/dts/qcom-pm8841.dtsi
index 523bee9..9f357f6 100644
--- a/arch/arm/boot/dts/qcom-pm8841.dtsi
+++ b/arch/arm/boot/dts/qcom-pm8841.dtsi
@@ -10,7 +10,7 @@
 		#size-cells = <0>;
 
 		pm8841_mpps: mpps@a000 {
-			compatible = "qcom,pm8841-mpp";
+			compatible = "qcom,pm8841-mpp", "qcom,spmi-mpp";
 			reg = <0xa000 0x400>;
 			gpio-controller;
 			#gpio-cells = <2>;