iio: imu: bmi270: Add support for BMI260

iio: imu: bmi270: Add support for BMI260

Adds support for the Bosch BMI260 6-axis IMU to the Bosch BMI270
driver. Setup and operation is nearly identical to the Bosch BMI270,
but has a different chip ID and requires different firmware.

Firmware is requested and loaded from userspace.

Adds ACPI ID BMI0160, used by several devices including the GPD Win
Mini, Aya Neo AIR Pro, and OXP Mini Pro.

GPD Win Mini:

Device (BMI2)
{
    Name (_ADR, Zero)  // _ADR: Address
    Name (_HID, "BMI0160")  // _HID: Hardware ID
    Name (_CID, "BMI0160")  // _CID: Compatible ID
    Name (_DDN, "Accelerometer")  // _DDN: DOS Device Name
    Name (_UID, One)  // _UID: Unique ID
    Method (_CRS, 0, NotSerialized)  // _CRS: Current Resource Settings
    {
        Name (RBUF, ResourceTemplate ()
        {
            I2cSerialBusV2 (0x0068, ControllerInitiated, 0x00061A80,
                AddressingMode7Bit, "\\_SB.I2CB",
                0x00, ResourceConsumer, , Exclusive,
                )
            GpioInt (Edge, ActiveLow, Exclusive, PullDefault, 0x0000,
                "\\_SB.GPIO", 0x00, ResourceConsumer, ,
                )
                {   // Pin list
                    0x008B
                }
        })
        Return (RBUF) /* \_SB_.I2CB.BMI2._CRS.RBUF */
    }
    ...
}

Signed-off-by: Justin Weiss <justin@justinweiss.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20241027172029.160134-5-justin@justinweiss.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>