hwmon: (pmbus/ibm-cffps) Use MFR_ID to choose version

There are multiple power supplies that will indicate
CFFPS_CCIN_VERSION_1, use the manufacturer ID to determine if it should
be treated as version cffps1 or version cffps2.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Link: https://lore.kernel.org/r/20211004144339.2634330-2-bjwyman@gmail.com


[groeck: Fixed continuation line alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>