pcmcia: hide the MAC address helpers if !NET

pcmcia_get_mac_from_cis is only called from networking and
recent changes made it call dev_addr_mod() which is itself
only defined if NET.

Reported-by: kernel test robot <[e-mail]>
Fixes: adeef3e32146 ("net: constify netdev->dev_addr")
Signed-off-by: Jakub Kicinski <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/pcmcia/pcmcia_cis.c

···
 }
 EXPORT_SYMBOL(pcmcia_get_tuple);
 
-
+#ifdef CONFIG_NET
 /*
  * pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
  *
···
 }
 EXPORT_SYMBOL(pcmcia_get_mac_from_cis);
 
+#endif /* CONFIG_NET */