cputemp: zhaoxin: fix HWMON_THERMAL namespace not import issue.

zhaoxin inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8ZP5Z


CVE: NA

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The function "hwmon_device_register_for_thermal" needs
"MODULE_IMPORT_NS(HWMON_THERMAL);" to use it.

Signed-off-by: leoliu-oc <leoliu-oc@zhaoxin.com>