The libcamera_api array is meant to contain all the headers from the
libcamera public API, for the purpose of generating documentation and
creating the libcamera_dep dependency. libcamera.h is part of the
libcamera public API, add it to the array.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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