thermal/drivers/acerhdf: Constify struct thermal_zone_device_ops

'struct thermal_zone_device_ops' could be left unmodified in this driver.

Constifying this structure moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

While at it, also constify a struct thermal_zone_params.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  26422	  12584	    512	  39518	   9a5e	drivers/platform/x86/acerhdf.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  26646	  12360	    512	  39518	   9a5e	drivers/platform/x86/acerhdf.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/e502fadf2c6b24fc4ec3a7880533f7ca68429720.1748177235.git.christophe.jaillet@wanadoo.fr


Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>