Remove the non-working bayou payload; clean up payloads

payloads is unmaintained. There are coding issues, there are things that don't
build correctly, payloads/Kconfig references not existing Kconfig files.

I need payloads to work better, so I'm nominating myself as maintainer if
no one objects.

Part of this bit rot is because we don't even seem to include building payloads
in our current CI; can this be done?

There is more pruning to come. If a payload is so unloved nobody has looked at it
in years, much less used it, it is time for it to go.

Bayou was a wonderful idea, and I'm sad to see it go, but ... oh well.

Change-Id: I37ea69c94c7fa721a6ccfb92e4b3e993627599f6
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
---
M Documentation/cbfs.txt
M MAINTAINERS
M payloads/Kconfig
D payloads/bayou/Doxyfile
D payloads/bayou/Makefile
D payloads/bayou/bayou.h
D payloads/bayou/bayou.ldscript
D payloads/bayou/bayou.xml.example
D payloads/bayou/config.c
D payloads/bayou/lzma.c
D payloads/bayou/lzmadecode.c
D payloads/bayou/lzmadecode.h
D payloads/bayou/main.c
D payloads/bayou/menu.c
D payloads/bayou/nrv2b.c
D payloads/bayou/payload.c
D payloads/bayou/self.c
D payloads/bayou/self.h
18 files changed, 3 insertions(+), 3,186 deletions(-)