BACKPORT: thermal: hisilicon: constify thermal_zone_of_device_ops structures

The thermal_zone_of_device_ops structure is only passed as the fourth
argument to devm_thermal_zone_of_sensor_register, which is declared
as const.  Thus the thermal_zone_of_device_ops structure itself can
be const.

Done with the help of Coccinelle.

Change-Id: Ib8f3bddb34ce231375c18ed907f0dc77548b6737
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
(cherry picked from commit 3fe156f1dd9909fc63d200b4d432884161ad8385)
Signed-off-by: Kevin Wangtao <kevin.wangtao@hisilicon.com>