ARM: dts: stm32: Enable STM32F769 clock driver

This patch enables clocks for STM32F769 boards.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32f769-disco.dts

@@ -102,6 +102,10 @@ mmc_vcard: mmc_vcard {
 	};
 };
 
+&rcc {
+	compatible = "st,stm32f769-rcc", "st,stm32f746-rcc", "st,stm32-rcc";
+};
+
 &cec {
 	pinctrl-0 = <&cec_pins_a>;
 	pinctrl-names = "default";