[PATCH] hwmon: adm9240 driver update - cleanups

hwmon: adm9240 update 1/2: cleanups:

o remove i2c read/write wrapper interface as it does nothing,
o change kmalloc + memset to kzalloc

Signed-off-by: Grant Coady <gcoady@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>