Documentation: add makefiles for more targets

Add a bunch of previously unbuilt source files to the Documentation build
machinery.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/laptops/Makefile b/Documentation/laptops/Makefile
index 0abe44f..2b0fa5e 100644
--- a/Documentation/laptops/Makefile
+++ b/Documentation/laptops/Makefile
@@ -1,5 +1,5 @@
 # List of programs to build
-hostprogs-y := dslm
+hostprogs-y := dslm freefall
 
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)