ARM: dts: stm32: Include auxiliary stm32fx clock definition

This patch include auxiliary clock definition (clocks which are not derived
from system clock.
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: NAlexandre TORGUE <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32f429.dtsi

@@ -48,6 +48,7 @@
 #include "skeleton.dtsi"
 #include "armv7-m.dtsi"
 #include <dt-bindings/pinctrl/stm32f429-pinfunc.h>
+#include <dt-bindings/clock/stm32fx-clock.h>
 
 / {
 	clocks {