hwmon: (pmbus) Convert pmbus drivers to use devm_kzalloc

Marginally less code and eliminate the possibility of memory leaks.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --cc drivers/hwmon/pmbus/adm1275.c
Simple merge

diff --cc drivers/hwmon/pmbus/lm25066.c
Simple merge

diff --cc drivers/hwmon/pmbus/ltc2978.c
Simple merge

diff --cc drivers/hwmon/pmbus/pmbus.c
Simple merge

diff --cc drivers/hwmon/pmbus/pmbus_core.c
Simple merge

diff --cc drivers/hwmon/pmbus/ucd9000.c
Simple merge

diff --cc drivers/hwmon/pmbus/ucd9200.c
Simple merge

diff --cc drivers/hwmon/pmbus/zl6100.c
Simple merge