fix(adc): Remove masking for channel number (espressif#9692)

Author: P-R-O-C-H-Y

cores/esp32/esp32-hal-adc.c

@@ -440,7 +440,7 @@ esp_err_t __analogContinuousInit(adc_channel_t *channel, uint8_t channel_num, ad
  dig_cfg.pattern_num = channel_num;
  for (int i = 0; i < channel_num; i++) {
  adc_pattern[i].atten = __adcContinuousAtten;
- adc_pattern[i].channel = channel[i] & 0x7;
+ adc_pattern[i].channel = channel[i];
  adc_pattern[i].unit = ADC_UNIT_1;
  adc_pattern[i].bit_width = __adcContinuousWidth;
  }