rtl8187: Fixed section mismatch in rtl8187_dev.c

When CONFIG_HOTPLUG=n the following error occures on vmlinux linkage:

`.exit.text' referenced in section `.data' of drivers/built-in.o:
defined in discarded section `.exit.text' of drivers/built-in.o

'rtl8187_disconnect' function marked as __devexit isn't compiled with no
hotplug support. Added __devexit_p macros to fix the problem.
Signed-off-by: NIhar Hrachyshka <ihar.hrachyshka@promwad.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtl8187_dev.c

@@ -1180,7 +1180,7 @@ static struct usb_driver rtl8187_driver = {
 	.name		= KBUILD_MODNAME,
 	.id_table	= rtl8187_table,
 	.probe		= rtl8187_probe,
-	.disconnect	= rtl8187_disconnect,
+	.disconnect	= __devexit_p(rtl8187_disconnect),
 };
 
 static int __init rtl8187_init(void)