docs: move asm-annotations.rst into core-api

This one file should not really be in the top-level documentation
directory.  core-api/ may not be a perfect fit but seems to be best, so
move it there.  Adjust a couple of internal document references to make
them location-independent, and point checkpatch.pl at the new location.

Cc: Jiri Slaby <[email protected]>
Cc: Joe Perches <[email protected]>
Reviewed-by: David Vernet <[email protected]>
Acked-by: Jani Nikula <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>
4 files changed