arm64: dts: qcom: pmi8994: add interrupt controller properties

Add interrupt controller properties now that spmi-gpio is a proper
hierarchical IRQ chip. The interrupts property is no longer needed so
remove it.

This change was not tested on any hardware but the same change was
tested on qcom-pm8941.dtsi using a LG Nexus 5 (hammerhead) phone with
no issues.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Reviewed-by: NStephen Boyd <sboyd@kernel.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

arch/arm64/boot/dts/qcom/pmi8994.dtsi

@@ -15,16 +15,8 @@
 			reg = <0xc000>;
 			gpio-controller;
 			#gpio-cells = <2>;
-			interrupts = <2 0xc0 0 IRQ_TYPE_NONE>,
-				     <2 0xc1 0 IRQ_TYPE_NONE>,
-				     <2 0xc2 0 IRQ_TYPE_NONE>,
-				     <2 0xc3 0 IRQ_TYPE_NONE>,
-				     <2 0xc4 0 IRQ_TYPE_NONE>,
-				     <2 0xc5 0 IRQ_TYPE_NONE>,
-				     <2 0xc6 0 IRQ_TYPE_NONE>,
-				     <2 0xc7 0 IRQ_TYPE_NONE>,
-				     <2 0xc8 0 IRQ_TYPE_NONE>,
-				     <2 0xc9 0 IRQ_TYPE_NONE>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
 		};
 	};