devicetree: Expose dtbs_check and dt_binding_check some more

It wasn't obvious that this was a command to run based on 'make help',
so add it to the top-level help for devicetree builds. Also, add an
example to the documentation to show that db_binding_check can be run
with DT_SCHEMA_FILES= to only check one schema file instead of all of
them.

Cc: Masahiro Yamada <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
[robh: fix-up due to .md to .rst conversion]
Signed-off-by: Rob Herring <[email protected]>

0 files changed, 0 insertions, 0 deletions