This platform had separate backends for the log subsystem and printk
handler, which was silly. Unify them to use the same backend so they
don't clobber each other.
This patch appears to be a lot of lines, but it's really mostly code
motion and renaming.
Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
Ring buffer in memory backend does not depends on xtensa adsp board,
so make it general: remove to log_backend_rb and remove dependency on
up_squared_adsp.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Andy Ross