fix ADC test project

Author: Yuriy Vynnychek

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

@@ -100,11 +100,12 @@
 #elif defined(CONFIG_BOARD_TLSR9518ADK80D)
 
 #define ADC_DEVICE_NAME		DT_LABEL(DT_INST(0, telink_b91_adc))
-#define ADC_RESOLUTION		13
+#define ADC_RESOLUTION		12
 #define ADC_GAIN		ADC_GAIN_1_4
 #define ADC_REFERENCE		ADC_REF_INTERNAL
 #define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT
 #define ADC_1ST_CHANNEL_ID	0
+#define ADC_1ST_CHANNEL_INPUT	0x0f
 
 #elif defined(CONFIG_BOARD_FRDM_K82F)