hwmon/w83793: Hide invalid VID readings

Ignore the VID readings when the motherboard has not designed
the function.  

Signed-off-by: Gong Jun <jgong@winbond.com>
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
1 file changed