[PATCH v2 0/3] doc: -falign-functions improvements

[Palmer Dabbelt]

There were some recent discussions about the desired behavior of
-falign-functions, which is behaving as desired.  This improves the
documentation to make that explicit.

Change since v1 <20221007134901.5078-1-pal...@rivosinc.com>:

* New patch 2 and 3