staging:iio: Add channel types IIO_CURRENT and IIO_POWER.

This is required for the ADE7758 driver cleanup.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 1a6bedc..c6fda58 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -36,6 +36,8 @@
 
 	/* real channel types */
 	IIO_IN,
+	IIO_CURRENT,
+	IIO_POWER,
 	IIO_ACCEL,
 	IIO_IN_DIFF,
 	IIO_GYRO,
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index e3582c9..fc20a06 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -48,6 +48,8 @@
 	[IIO_TIMESTAMP] = "timestamp",
 	[IIO_ACCEL] = "accel",
 	[IIO_IN] = "in",
+	[IIO_CURRENT] = "current",
+	[IIO_POWER] = "power",
 	[IIO_IN_DIFF] = "in-in",
 	[IIO_GYRO] = "gyro",
 	[IIO_TEMP] = "temp",