all: unmark experimental features

It's been some time now we've had those features, so unmark them
being experimental.

It does not mean everything is perfect, but may gather some more
testing of those features.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

# m68k specific configuration file

## select ARCH_SUPPORTS_32

## select ARCH_DEFAULT_32

## select ARCH_DEFAULT_BE

## select ARCH_SUPPORTS_WITH_CPU

##

## help The m68k architecture