Driver Core: Increase the default timeout value of the firmware subsystem

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174589

The ipw driver sometimes takes a long time to load its firmware.
Whilst the ipw driver should be using the async interface of
the firmware loader to make this a non-issue, this is a minimal fix.
Signed-off-by: NDave Jones <davej@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/firmware_class.c

@@ -35,7 +35,7 @@ enum {
 	FW_STATUS_READY_NOHOTPLUG,
 };
 
-static int loading_timeout = 10;	/* In seconds */
+static int loading_timeout = 60;	/* In seconds */
 
 /* fw_lock could be moved to 'struct firmware_priv' but since it is just
  * guarding for corner cases a global lock should be OK */