iio: ina2xx: give the capture kthread a more useful name string.

PID PPID USER STAT VSZ %VSZ %CPU COMMAND
144 2 root DW 0 0% 33% [ina226:1-8800us]
141 2 root DW 0 0% 25% [ina226:0-8800us]
40 2 root SW 0 0% 15% [irq/156-4802a00]
147 2 root DW 0 0% 7% [ina226:2-8800us]
145 1 root S 1236 0% 6% dd if /dev/iio:device1 of /dev/null
148 1 root S 1236 0% 4% dd if /dev/iio:device2 of /dev/null
149 137 root R 1244 0% 3% top -d 1
142 1 root S 1236 0% 2% dd if /dev/iio:device0 of /dev/null

Signed-off-by: Marc Titinger <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/adc/ina2xx-adc.c

···
 	chip->prev_ns = iio_get_time_ns();
 
 	chip->task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
-				 "ina2xx-%uus", sampling_us);
+				 "%s:%d-%uus", indio_dev->name, indio_dev->id,
+				 sampling_us);
 
 	return PTR_ERR_OR_ZERO(chip->task);
 }