dts: arm: stm32l5 octospi clock source

The definition of the octospi clock source is given
by the DTS node. The default value selects the sysclk
(not pclk) for the alternate clock control.

Signed-off-by: Francois Ramu <[email protected]>

Author: FRASTM

dts/arm/st/l5/stm32l5.dtsi

@@ -397,7 +397,8 @@
 			compatible = "st,stm32-ospi";
 			reg = <0x44021000 0x400>;
 			interrupts = <76 0>;
-			clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00000100>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00000100>,
+					<&rcc STM32_SRC_SYSCLK OSPI_SEL(0)>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";