ARM: dts: sama7g5: add slow rc and main rc oscillators

Add slow rc and main rc oscillators to dtsi.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
diff --git a/arch/arm/dts/sama7g5.dtsi b/arch/arm/dts/sama7g5.dtsi
index 618f3a3..0fc7a5e 100644
--- a/arch/arm/dts/sama7g5.dtsi
+++ b/arch/arm/dts/sama7g5.dtsi
@@ -16,6 +16,18 @@
 	compatible = "microchip,sama7g5";
 
 	clocks {
+		slow_rc_osc: slow_rc_osc {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <32000>;
+		};
+
+		main_rc: main_rc {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <12000000>;
+		};
+
 		slow_xtal: slow_xtal {
 			compatible = "fixed-clock";
 			#clock-cells = <0>;
diff --git a/arch/arm/dts/sama7g5ek-u-boot.dtsi b/arch/arm/dts/sama7g5ek-u-boot.dtsi
index c0f8f94..06af2f7 100644
--- a/arch/arm/dts/sama7g5ek-u-boot.dtsi
+++ b/arch/arm/dts/sama7g5ek-u-boot.dtsi
@@ -23,6 +23,14 @@
 	};
 };
 
+&main_rc {
+	u-boot,dm-pre-reloc;
+};
+
+&slow_rc_osc {
+	u-boot,dm-pre-reloc;
+};
+
 &uart0 {
 	u-boot,dm-pre-reloc;
 };