net: smc9194: add missing MODULE_DESCRIPTION() macro

With ARCH=m68k, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/ethernet/smsc/smc9194.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240618-md-m68k-drivers-net-ethernet-smsc-v1-1-ad3d7200421e@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/smsc/smc9194.c

@@ -1501,6 +1501,7 @@ static void smc_set_multicast_list(struct net_device *dev)
 #ifdef MODULE
 
 static struct net_device *devSMC9194;
+MODULE_DESCRIPTION("SMC 9194 Ethernet driver");
 MODULE_LICENSE("GPL");
 
 module_param_hw(io, int, ioport, 0);