test: adc: add unit test for gd32a503v_eval

add unit test for gd32a503v_eval

Signed-off-by: YuLong Yao <[email protected]>

Author: feilongfl

tests/drivers/adc/adc_api/src/test_adc.c

@@ -141,6 +141,15 @@
 #define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT
 #define ADC_1ST_CHANNEL_ID	3
 
+#elif defined(CONFIG_BOARD_GD32A503V_EVAL)
+
+#define ADC_DEVICE_NODE		DT_INST(0, gd_gd32_adc)
+#define ADC_RESOLUTION		12
+#define ADC_GAIN		ADC_GAIN_1
+#define ADC_REFERENCE		ADC_REF_INTERNAL
+#define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT
+#define ADC_1ST_CHANNEL_ID	1
+
 #elif defined(CONFIG_BOARD_HEXIWEAR_K64)
 
 #define ADC_DEVICE_NODE		DT_INST(0, nxp_kinetis_adc16)