The GTK+ engine schemas are not insignicant in size but also mostly useless.
Put them in a sub-package instead of PN so they only get installed when
explicitly required.
(From OE-Core rev: 312ca574e62cb0ac5fdad4943d7ff9d457caf8e3)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>