ARM: dts: imx6q-bx50v3: Enable secure-reg-access

Enable secure debug enable register access for Bx50v3 devices to enable
PMU and hardware counters for perf.
Signed-off-by: NPeter Senna Tschudin <peter.senna@collabora.com>
Signed-off-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q-bx50v3.dtsi

@@ -353,6 +353,10 @@
 	};
 };
 
+&pmu {
+	secure-reg-access;
+};
+
 &usdhc2 {
 	status = "disabled";
 };

arch/arm/boot/dts/imx6qdl.dtsi

@@ -143,7 +143,7 @@
 		};
 	};
 
-	pmu {
+	pmu: pmu {
 		compatible = "arm,cortex-a9-pmu";
 		interrupt-parent = <&gpc>;
 		interrupts = <0 94 IRQ_TYPE_LEVEL_HIGH>;