hwmon: (adt7475) Add support for the ADT7473

Add support for the ADT7473 to the adt7475 driver, and mark the
adt7473 driver for removal. The ADT7473 and ADT7475 chips are almost
the same chip and essentially compatible, so there's no point in
having separate drivers for them.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>
Cc: "Darrick J. Wong" <djwong@us.ibm.com>
diff --git a/Documentation/hwmon/adt7473 b/Documentation/hwmon/adt7473
index 1cbf671..446612b 100644
--- a/Documentation/hwmon/adt7473
+++ b/Documentation/hwmon/adt7473
@@ -9,6 +9,8 @@
 
 Author: Darrick J. Wong
 
+This driver is depreacted, please use the adt7475 driver instead.
+
 Description
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