sensor: rm3100: Add Read/Decode and Streaming mode

[ubieda]

Description

This PR introduces RM3100 magnetometer sensor, with basic support (read-decode) and Streaming mode (DRDY triggers).
This version includes I2C support only (SPI not included).

Testing

Run shell sample on nRF52840DK with the sensor connected.

• Build command

west build -b nrf52840dk/nrf52840 samples/subsys/shell/shell_module -- -DCONFIG_I2C=y -DCONFIG_I2C_SHELL=y -DCONFIG_SENSOR=y -DCONFIG_RM3100_STREAM=y

• Overlay (boards/nrf52840dk_nrf52840.overlay)

#include <zephyr/dt-bindings/sensor/rm3100.h>

&arduino_i2c {
	status = "okay";
	
	rm3100:rm3100@20 {
		compatible = "pni,rm3100";
		reg = <0x20>;
		status = "okay";
		odr = <RM3100_DT_ODR_1_2>;

		/* Arduino pin: D2 */
		int-gpios = <&arduino_header 8 GPIO_ACTIVE_HIGH>;
	};
};

• Console Output

uart:~$ sensor get rm3100@20 
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=559878875494ns (0.003333)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=559878875494ns (-0.105599)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=559878875494ns (0.353066)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=559878875494ns, (0.003333, -0.105599, 0.353066)
uart:~$ sensor get rm3100@20
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=561543090582ns (0.003199)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=561543090582ns (-0.105866)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=561543090582ns (0.354132)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=561543090582ns, (0.003199, -0.105866, 0.354132)

uart:~$ sensor stream rm3100@20 on data_ready incl
Enabling stream...
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=540267059088ns (0.001866)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=540267059088ns (-0.106132)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=540267059088ns (0.355066)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=540267059088ns, (0.001866, -0.106132, 0.355066)
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=540332153082ns (0.001333)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=540332153082ns (-0.105866)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=540332153082ns (0.354799)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=540332153082ns, (0.001333, -0.105866, 0.354799)
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=541182708502ns (0.001866)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=541182708502ns (-0.105732)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=541182708502ns (0.353599)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=541182708502ns, (0.001866, -0.105732, 0.353599)
channel type=8(magn_x) index=0 shift=11 num_samples=1 value=542033294440ns (0.002132)
channel type=9(magn_y) index=0 shift=11 num_samples=1 value=542033294440ns (-0.105465)
channel type=10(magn_z) index=0 shift=11 num_samples=1 value=542033294440ns (0.353332)
channel type=11(magn_xyz) index=0 shift=11 num_samples=1 value=542033294440ns, (0.002132, -0.105465, 0.353332)
uart:~$ sensor stream rm3100@20 off