pcmcia: Convert pcmcia_device_id declarations to const

Saves about 50KB of data.

Old/new size of all objects:
   text	   data	    bss	    dec	    hex	filename
 563015	  80096	 130684	 773795	  bcea3	(TOTALS)
 610916	  32256	 130632	 773804	  bceac	(TOTALS)

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Kurt Van Dijck <kurt.van.dijck@eia.be> (for drivers/net/can/softing/softing_cs.c)
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

drivers/net/can/softing/softing_cs.c

@@ -315,7 +315,7 @@ pcmcia_failed:
 	return ret ?: -ENODEV;
 }
 
-static /*const*/ struct pcmcia_device_id softingcs_ids[] = {
+static const struct pcmcia_device_id softingcs_ids[] = {
 	/* softing */
 	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
 	PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),