Add MODULE_DESCRIPTION to dummy-irq.c and lkdtm.c in drivers/misc

This starts to address
https://bugzilla.kernel.org/show_bug.cgi?id=10770

Signed-off-by: Terry Chia <terrycwk1994@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/dummy-irq.c

@@ -61,3 +61,4 @@ MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Jiri Kosina");
 module_param(irq, uint, 0444);
 MODULE_PARM_DESC(irq, "The IRQ to register for");
+MODULE_DESCRIPTION("Dummy IRQ handler driver");

drivers/misc/lkdtm.c

@@ -870,3 +870,4 @@ module_init(lkdtm_module_init);
 module_exit(lkdtm_module_exit);
 
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Kprobe module for testing crash dumps");