drivers/pcmcia: include <module.h> for modular xxs1500_ss code

This file is built off of a tristate Kconfig option and also contains
modular function calls so it should explicitly include module.h to
avoid compile breakage during header shuffles done in the future.

Cc: Wolfram Sang <[e-mail]>
Acked-by: Wolfram Sang <[e-mail]>
Cc: [e-mail]
Signed-off-by: Paul Gortmaker <[e-mail]>

drivers/pcmcia/xxs1500_ss.c

···
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/mm.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/resource.h>