[nrf fromtree] samples: Simplify ESP32 overlays moving to socs

Move overlays and conf from boards to socs in following samples :
- samples/drivers/adc/adc_dt
- samples/drivers/counter/alarm
- samples/drivers/dac
- samples/subsys/settings

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

add more samples

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

Signed-off-by: Sebastian Głąb <[email protected]>
(cherry picked from commit b58c424)

Author: nordic-segl

samples/drivers/adc/adc_dt/boards/esp32_devkitc_wroom_procpu.overlay

@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 2024 Joel Guittet
+ * Copyright (c) 2022 Wolter HV <[email protected]>
+ *
  * SPDX-License-Identifier: Apache-2.0
  */
 

samples/drivers/adc/adc_dt/boards/esp32c3_luatos_core_esp32c3_usb.overlay

@@ -6,9 +6,7 @@
 
 / {
 	zephyr,user {
-		io-channels =
-			<&adc0 0>,
-			<&adc1 0>;
+		io-channels = <&adc0 0>;
 	};
 };
 
@@ -25,17 +23,3 @@
 		zephyr,resolution = <12>;
 	};
 };
-
-&adc1 {
-	status = "okay";
-	#address-cells = <1>;
-	#size-cells = <0>;
-
-	channel@0 {
-		reg = <0>;
-		zephyr,gain = "ADC_GAIN_1_4";
-		zephyr,reference = "ADC_REF_INTERNAL";
-		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
-		zephyr,resolution = <12>;
-	};
-};