s390/lcs: add missing MODULE_DESCRIPTION() macro

With ARCH=s390, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/s390/net/lcs.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20240625-md-s390-drivers-s390-net-v2-1-5a8a2b2f2ae3@quicinc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/s390/net/lcs.c

 // SPDX-License-Identifier: GPL-2.0+
 /*
- *  Linux for S/390 Lan Channel Station Network Driver
+ *  Linux for S/390 LAN channel station device driver
  *
  *  Copyright IBM Corp. 1999, 2009
  *  Author(s): Original Code written by
@@ -2380,5 +2380,6 @@ module_init(lcs_init_module);
 module_exit(lcs_cleanup_module);
 
 MODULE_AUTHOR("Frank Pavlic <fpavlic@de.ibm.com>");
+MODULE_DESCRIPTION("S/390 LAN channel station device driver");
 MODULE_LICENSE("GPL");