[nrf fromlist] dt-bindings: adc: nrf-saadc: Remove platform dependencies

Remove platform dependencies to make dt-bindings more generic.

Upstream PR #: 93497

Signed-off-by: Jakub Zymelka <[email protected]>

Author: jaz1-nordic

include/zephyr/dt-bindings/adc/nrf-saadc-haltium.h

@@ -7,6 +7,21 @@
 #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_SAADC_H_
 #define ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_SAADC_H_
 
+#define NRF_SAADC_AIN0 0
+#define NRF_SAADC_AIN1 1
+#define NRF_SAADC_AIN2 2
+#define NRF_SAADC_AIN3 3
+#define NRF_SAADC_AIN4 4
+#define NRF_SAADC_AIN5 5
+#define NRF_SAADC_AIN6 6
+#define NRF_SAADC_AIN7 7
+#define NRF_SAADC_AIN8 8
+#define NRF_SAADC_AIN9 9
+#define NRF_SAADC_AIN10 10
+#define NRF_SAADC_AIN11 11
+#define NRF_SAADC_AIN12 12
+#define NRF_SAADC_AIN13 13
+
 /**
  * @brief Short ADC negative input to ground
  *
@@ -30,14 +45,22 @@
  *   zephyr,input-positive = <NRF_SAADC_AIN3>;
  * @endcode
  */
-#define NRF_SAADC_GND  0
-#define NRF_SAADC_AIN0 1
-#define NRF_SAADC_AIN1 2
-#define NRF_SAADC_AIN2 3
-#define NRF_SAADC_AIN3 4
-#define NRF_SAADC_AIN4 5
-#define NRF_SAADC_AIN5 6
-#define NRF_SAADC_AIN6 7
-#define NRF_SAADC_AIN7 8
+#define NRF_SAADC_GND  (NRF_SAADC_AIN_VDD_SHIM_OFFSET - 1)
+
+#define NRF_SAADC_AIN_VDD_SHIM_OFFSET 128
+#define NRF_SAADC_VDD		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 0)
+#define NRF_SAADC_VDDDIV2	      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 1)
+#define NRF_SAADC_AVDD		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 2)
+#define NRF_SAADC_DVDD		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 3)
+#define NRF_SAADC_VDDHDIV5	      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 4)
+#define NRF_SAADC_VDDL		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 5)
+#define NRF_SAADC_DECB		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 6)
+#define NRF_SAADC_VSS		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 7)
+#define NRF_SAADC_VDDAO3V0	      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 8)
+#define NRF_SAADC_VDDAO1V8	      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 9)
+#define NRF_SAADC_VDDAO0V8	      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 10)
+#define NRF_SAADC_VDDRF		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 11)
+#define NRF_SAADC_VBAT		      (NRF_SAADC_AIN_VDD_SHIM_OFFSET + 12)
+#define NRF_SAADC_AIN_DISABLED	      255 /* UINT8_MAX */
 
 #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_ADC_NRF_SAADC_H_ */