The meson custom_target() function accepts a 'depend_files' argument to
list additional dependency files. Files already listed in the 'command'
argument are handled automatically, and don't need to be added manually.
Drop them.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>