Update to kernel headers v4.8.14.

Test: Built mips/arm/arm64/x86/x86_64. Built and booted angler.
Change-Id: I1691a363c8d889535334a98dad93651808a15af6
diff --git a/original/uapi/linux/iio/types.h b/original/uapi/linux/iio/types.h
index b0916fc..22e5e58 100644
--- a/original/uapi/linux/iio/types.h
+++ b/original/uapi/linux/iio/types.h
@@ -39,6 +39,7 @@
 	IIO_RESISTANCE,
 	IIO_PH,
 	IIO_UVINDEX,
+	IIO_ELECTRICALCONDUCTIVITY,
 };
 
 enum iio_modifier {