staging:iio: tree wide IIO_RING_BUFFER config symbol to IIO_BUFFER

Functionality is generic, so name is missleading.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/iio/ring_generic.h b/drivers/staging/iio/ring_generic.h
index 8f6ecde..6a89ec0 100644
--- a/drivers/staging/iio/ring_generic.h
+++ b/drivers/staging/iio/ring_generic.h
@@ -13,7 +13,7 @@
 #include "iio.h"
 #include "chrdev.h"
 
-#ifdef CONFIG_IIO_RING_BUFFER
+#ifdef CONFIG_IIO_BUFFER
 
 struct iio_ring_buffer;
 
@@ -209,7 +209,7 @@
 
 int iio_sw_ring_preenable(struct iio_dev *indio_dev);
 
-#else /* CONFIG_IIO_RING_BUFFER */
+#else /* CONFIG_IIO_BUFFER */
 
 static inline int iio_ring_buffer_register(struct iio_dev *indio_dev,
 					   struct iio_chan_spec *channels,
@@ -221,6 +221,6 @@
 static inline void iio_ring_buffer_unregister(struct iio_dev *indio_dev)
 {};
 
-#endif /* CONFIG_IIO_RING_BUFFER */
+#endif /* CONFIG_IIO_BUFFER */
 
 #endif /* _IIO_RING_GENERIC_H_ */