hwmon/w83793: Add documentation and maintainer

Documentation for the new w83793 hardware monitoring driver, originally
provided by Yuan My from Winbond.

Also add myself as the maintainer of this driver.

Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

Documentation/hwmon/sysfs-interface

@@ -208,12 +208,14 @@ temp[1-*]_auto_point[1-*]_temp_hyst
 ****************
 
 temp[1-*]_type	Sensor type selection.
-		Integers 1 to 4 or thermistor Beta value (typically 3435)
+		Integers 1 to 6 or thermistor Beta value (typically 3435)
 		RW
 		1: PII/Celeron Diode
 		2: 3904 transistor
 		3: thermal diode
 		4: thermistor (default/unknown Beta)
+		5: AMD AMDSI
+		6: Intel PECI
 		Not all types are supported by all chips
 
 temp[1-*]_max	Temperature max value.