ARM: dts: STi: STiH407: Provide CPU with a means to look-up Major number

This is used for CPU Frequency Scaling.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NMaxime Coquelin <maxime.coquelin@st.com>

arch/arm/boot/dts/stih407-family.dtsi

@@ -36,6 +36,7 @@
 			clock-names = "cpu";
 			clock-latency = <100000>;
 			cpu0-supply = <&pwm_regulator>;
+			st,syscfg = <&syscfg_core 0x8e0>;
 		};
 		cpu@1 {
 			device_type = "cpu";