Using static const generally increases object text and decreases data size.
It also generally decreases overall object size.

   text	   data	    bss	    dec	    hex	filename
   1897	     56	    672	   2625	    a41	drivers/net/wireless/ath/carl9170/cmd.o.new
   1897	     56	    672	   2625	    a41	drivers/net/wireless/ath/carl9170/cmd.o.old
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>