boards: add HSE and HSI support for STM32MP257F boards.

Add declaration of the HSE and HSI frequency that will be used to compute
the SystemCoreClock.

Signed-off-by: Arnaud Pouliquen <[email protected]>

Author: arnopo

boards/st/stm32mp257f_dk/stm32mp257f_dk_stm32mp257fxx_m33.dts

@@ -45,6 +45,15 @@
 	};
 };
 
+&clk_hsi {
+	status = "okay";
+};
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(40)>;
+	status = "okay";
+};
+
 &rcc {
 	clock-frequency = <DT_FREQ_M(400)>;
 };

boards/st/stm32mp257f_ev1/stm32mp257f_ev1_stm32mp257fxx_m33.dts

@@ -45,6 +45,15 @@
 	};
 };
 
+&clk_hsi {
+	status = "okay";
+};
+
+&clk_hse {
+	clock-frequency = <DT_FREQ_M(40)>;
+	status = "okay";
+};
+
 &rcc {
 	clock-frequency = <DT_FREQ_M(400)>;
 };