tests: drivers: counter_basic_api: Enable lpit test for frdm_ke17z

Enable test for all channels.
This test covers following test cases:
- test_set_top_value_without_alarm
- test_set_top_value_with_alarm
- test_valid_function_without_alarm

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

Author: FelixWang47831

tests/drivers/counter/counter_basic_api/boards/frdm_ke17z.overlay

@@ -11,3 +11,15 @@
 	clocks = <&scg KINETIS_SCG_FIRC_CLK>;
 	clock-source = "system";
 };
+
+&lpit0_channel0 {
+	status = "okay";
+};
+
+&lpit0_channel2 {
+	status = "okay";
+};
+
+&lpit0_channel3 {
+	status = "okay";
+};