boards: frdm_imx91: enable tpm2 counter support

Enable TPM2 counter support on FRDM_IMX91 board.
Compile commands:
west build -p always -b frdm_imx91/mimx9131 \
             tests/drivers/counter/counter_basic_api/

Signed-off-by: Hongbo Wang <[email protected]>
Signed-off-by: Jiafei Pan <[email protected]>

Author: whbo158

boards/nxp/frdm_imx91/frdm_imx91_mimx9131.dts

@@ -31,3 +31,7 @@
 	pinctrl-0 = <&uart1_default>;
 	pinctrl-names = "default";
 };
+
+&tpm2 {
+	status = "okay";
+};

boards/nxp/frdm_imx91/frdm_imx91_mimx9131.yaml

@@ -13,5 +13,6 @@ toolchain:
   - cross-compile
 ram: 1024
 supported:
+  - counter
   - uart
 vendor: nxp