pcmcia: autoload module pcmcia

Attempt to load the "pcmcia" module for 16-bit PCMCIA cards, so that
PCMCIA support becomes available without pcmciautils/udev userspace
interaction. Based on a suggestion and a patch
Signed-off-by: Komuro <komurojun-mbn@nifty.com>
but converted it to request_module_nowait() and move it to a later
stage.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

drivers/pcmcia/cs.c

@@ -243,6 +243,13 @@ int pcmcia_register_socket(struct pcmcia_socket *socket)
 
 	pcmcia_parse_events(socket, SS_DETECT);
 
+	/*
+	 * Let's try to get the PCMCIA module for 16-bit PCMCIA support.
+	 * If it fails, it doesn't matter -- we still have 32-bit CardBus
+	 * support to offer, so this is not a failure mode.
+	 */
+	request_module_nowait("pcmcia");
+
 	return 0;
 
  err: