hwmon: (nct6775) Add support for NCT6792D

NCT6792D is similar to NCT6791D. Only beep control and temperature
monitoring registers are different.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/Documentation/hwmon/nct6775 b/Documentation/hwmon/nct6775
index 345d11a..f0dd3d2 100644
--- a/Documentation/hwmon/nct6775
+++ b/Documentation/hwmon/nct6775
@@ -28,6 +28,10 @@
     Prefix: 'nct6791'
     Addresses scanned: ISA address retrieved from Super I/O registers
     Datasheet: Available from Nuvoton upon request
+  * Nuvoton NCT6792D
+    Prefix: 'nct6792'
+    Addresses scanned: ISA address retrieved from Super I/O registers
+    Datasheet: Available from Nuvoton upon request
 
 Authors:
         Guenter Roeck <linux@roeck-us.net>