This re-syncs the MACH_TYPE_xxx values from the Linux Kernel v4.9
release. In addition this removes all of the machine_arch_type and
machine_is_xxx logic that is unused in U-Boot. This removal removes a
large number of otherwise unused CONFIG values from the list to be
converted.
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Tested-by: Adam Ford <aford173@gmail.com>