boards: st: stm32mp157c_dk2: provide HSE clock frequency in DTS

Provide the HSE clock frequency by enabling and configuring its Device Tree
node in the board's DTS instead of using Kconfig.

Signed-off-by: Mathieu Choplain <[email protected]>

Author: mathieuchopstm

boards/st/stm32mp157c_dk2/Kconfig.defconfig

@@ -9,7 +9,4 @@ config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
 
-config CLOCK_STM32_HSE_CLOCK
-	default 24000000
-
 endif # BOARD_STM32MP157_Dk2

boards/st/stm32mp157c_dk2/stm32mp157c_dk2.dts

@@ -57,6 +57,11 @@
 	clock-frequency = <DT_FREQ_M(209)>;
 };
 
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(24)>;
+	status = "okay";
+};
+
 &spi4_miso_pe13 {
 	slew-rate = "very-high-speed";
 };