libfdt: Add some documenting comments in libfdt.h

This patch adds some internal documentation in libfdt.h, in the form
of comments on the error codes and some functions.  Only a couple of
functions are covered so far, leaving the documentation still woefully
inadequate, but hey, it's a start.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
1 file changed