ARM: shmobile: r7s72100: genmai: populate nodes for external clocks

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r7s72100-genmai-reference.dts

@@ -30,6 +30,14 @@ lbsc {
 	};
 };
 
+&extal_clk {
+	clock-frequency = <13330000>;
+};
+
+&usb_x1_clk {
+	clock-frequency = <48000000>;
+};
+
 &i2c2 {
 	status = "okay";
 	clock-frequency = <400000>;