uio: add missing MODULE_DESCRIPTION() macros

Fix the 'make W=1' warnings:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/uio/uio.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/uio/uio_cif.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/uio/uio_aec.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/uio/uio_netx.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/uio/uio_mf624.o

Signed-off-by: Jeff Johnson <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/uio/uio.c

···
 
 module_init(uio_init)
 module_exit(uio_exit)
+MODULE_DESCRIPTION("Userspace IO core module");
 MODULE_LICENSE("GPL v2");

drivers/uio/uio_aec.c

···
 };
 
 module_pci_driver(pci_driver);
+MODULE_DESCRIPTION("Adrienne Electronics Corp time code PCI device");
 MODULE_LICENSE("GPL");

drivers/uio/uio_cif.c

···
 
 module_pci_driver(hilscher_pci_driver);
 MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
+MODULE_DESCRIPTION("UIO Hilscher CIF card driver");
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");

drivers/uio/uio_mf624.c

···
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * UIO driver fo Humusoft MF624 DAQ card.
+ * UIO driver for Humusoft MF624 DAQ card.
  * Copyright (C) 2011 Rostislav Lisovy <[e-mail]>,
  *                    Czech Technical University in Prague
  */
···
 MODULE_DEVICE_TABLE(pci, mf624_pci_id);
 
 module_pci_driver(mf624_pci_driver);
+MODULE_DESCRIPTION("UIO driver for Humusoft MF624 DAQ card");
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Rostislav Lisovy <[e-mail]>");

drivers/uio/uio_netx.c

···
 
 module_pci_driver(netx_pci_driver);
 MODULE_DEVICE_TABLE(pci, netx_pci_ids);
+MODULE_DESCRIPTION("UIO driver for Hilscher NetX based fieldbus cards");
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Hans J. Koch, Manuel Traut");