tests: drivers: counter: counter_basic_api: stm support

Add STM device tree macro in devices array
to enable test.

Signed-off-by: Felix Wang <[email protected]>

Author: FelixWang47831

tests/drivers/counter/counter_basic_api/src/test_counter.c

@@ -132,6 +132,9 @@ static const struct device *const devices[] = {
 #ifdef CONFIG_COUNTER_MCUX_FTM
 	DEVS_FOR_DT_COMPAT(nxp_ftm)
 #endif
+#ifdef CONFIG_COUNTER_MCUX_STM
+	DEVS_FOR_DT_COMPAT(nxp_stm)
+#endif
 #ifdef CONFIG_COUNTER_RENESAS_RZ_GTM
 	DEVS_FOR_DT_COMPAT(renesas_rz_gtm_counter)
 #endif