hwmon: (adm1275) Enable adm1278 ADM1278_TEMP1_EN

The adm1278 temp attribute need it for openbmc platform .
This feature not enabled by default, so PMON_CONFIG needs to enable it.

Signed-off-by: Manikandan Elumalai <manikandan.hcl.ers.epl@gmail.com>
Link: https://lore.kernel.org/r/20200622153727.GA9347@cnn


[groeck: Split long line]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>