hwmon: (k10temp) Remove residues of current and voltage

mainline inclusion
from mainline-v5.15-rc4
commit 23c69b90
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7DX6V
CVE: NA

Reference: https://git.kernel.org/torvalds/c/23c69b90365c8280b627aa969393d828ff47ac14



---------------------------

commit 23c69b90 upstream.

Commit id "b00647c4",
adds reporting current and voltage to k10temp.c

The commit id "0a4e668b",
removed reporting current and voltage from k10temp.c

The curr and in(voltage) entries are not removed from
"k10temp_info" structure. Removing those residue entries.
while at it, update k10temp driver documentation

Signed-off-by: suma hegde <suma.hegde@amd.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210902174155.7365-2-nchatrad@amd.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[fix conflict during backport]
Signed-off-by: Pu Wen <puwen@hygon.cn>