IIO: Move core headers to include/linux/iio

Step 1 in moving the IIO core out of staging.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/iio/iio_simple_dummy_events.c b/drivers/staging/iio/iio_simple_dummy_events.c
index 449c7a5..f85bd19 100644
--- a/drivers/staging/iio/iio_simple_dummy_events.c
+++ b/drivers/staging/iio/iio_simple_dummy_events.c
@@ -12,9 +12,9 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 
-#include "iio.h"
-#include "sysfs.h"
-#include "events.h"
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
 #include "iio_simple_dummy.h"
 
 /* Evgen 'fakes' interrupt events for this example */