ctf: Prohibit a bunch of debug info options we don't support.

ctf: Prohibit a bunch of debug info options we don't support.

CONFIG_DEBUG_INFO_DWARF4 and CONFIG_DEBUG_INFO_SPLIT will require significant
changes to dwarf2ctf, but will eventually be supported.

CONFIG_DEBUG_INFO_REDUCED fundamentally breaks the type deduplicator and will
never be supported.

Unfortunately this forces us to change the DEBUG_INFO select to a depends,
so you have to remember to turn CONFIG_DEBUG_INFO on or half of dtrace won't
work.

Orabug: 20456825

Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Acked-by: Kris Van Hees <kris.van.hees@oracle.com>