meson: share the configuration_data object

Suggested by Jani. And rename from config_h to plain config, to make
it's multi-use character a bit more obvious.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2 files changed