wifi: ath10k: Constify structures in hw.c

Structures defined in hw.c are not modified in this driver.

Constifying these structures moves some data to a read-only section, so
increase overall security.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  10357	    951	      0	  11308	   2c2c	drivers/net/wireless/ath/ath10k/hw.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  11125	    203	      0	  11328	   2c40	drivers/net/wireless/ath/ath10k/hw.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Baochen Qiang <quic_bqiang@quicinc.com>
Link: https://patch.msgid.link/504b4d5276d13f5f9c3bffcfdaf244006312c22b.1745051315.git.christophe.jaillet@wanadoo.fr


Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>