[nrf fromtree] samples: adc: esp32s2: Fix unsupported resolution

S2 has 12-bit ADC.

Signed-off-by: Marek Matej <[email protected]>

Signed-off-by: Sebastian Głąb <[email protected]>
(cherry picked from commit 37f2f7e)

Author: nordic-segl

samples/drivers/adc/adc_dt/boards/esp32s2_saola.overlay

@@ -22,7 +22,7 @@
 		zephyr,gain = "ADC_GAIN_1_4";
 		zephyr,reference = "ADC_REF_INTERNAL";
 		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
-		zephyr,resolution = <13>;
+		zephyr,resolution = <12>;
 	};
 };
 
@@ -36,6 +36,6 @@
 		zephyr,gain = "ADC_GAIN_1_4";
 		zephyr,reference = "ADC_REF_INTERNAL";
 		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
-		zephyr,resolution = <13>;
+		zephyr,resolution = <12>;
 	};
 };