arm64: dts: renesas: rzg2lc-smarc-som: Enable OSTM

Enable OSTM{1, 2} interfaces on RZ/G2LC SMARC EVK.
OSTM0 is reserved for TF-A.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220307192436.13237-3-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/rzg2lc-smarc-som.dtsi

@@ -84,6 +84,14 @@ &extal_clk {
 	clock-frequency = <24000000>;
 };
 
+&ostm1 {
+	status = "okay";
+};
+
+&ostm2 {
+	status = "okay";
+};
+
 &pinctrl {
 	eth0_pins: eth0 {
 		pinmux = <RZG2L_PORT_PINMUX(28, 1, 1)>, /* ET0_LINKSTA */