adc: npcx: use new DT pinctrl accessors

Update to use the new APIs.

Signed-off-by: Martí Bolívar <[email protected]>

Author: mbolivar-nordic

drivers/adc/adc_npcx.c

@@ -25,7 +25,7 @@ LOG_MODULE_REGISTER(adc_npcx, CONFIG_ADC_LOG_LEVEL);
 #define ADC_REGULAR_MEAST_VAL	0x0001
 
 /* ADC channel number */
-#define NPCX_ADC_CH_COUNT DT_INST_PROP_LEN(0, pinctrl_0)
+#define NPCX_ADC_CH_COUNT DT_INST_NUM_PINCTRLS_BY_IDX(0, 0)
 
 /* ADC targeted operating frequency (2MHz) */
 #define NPCX_ADC_CLK 2000000