harfbuzz: split libharfbuzz-subset.so to its own binary package
harfbuzz binary package size increased from 624608 bytes in yocto 2.5 to
1365431 bytes in yocto 3.0. Most of the size increase is in the new
libharfbuzz-subset.so* library
https://harfbuzz.github.io/utilities.html#utilities-command-line-hbsubset
Split it to its own binary package which will be installed if anyone needs it.
Effect to harfbuzz binary package size is:
-PKGSIZE =
1476271
+PKGSIZE =
1007424
Signed-off-by: Mikko Rapeli <mikko.rapeli@bmw.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>