Using populate_sysroot for this data was a nice idea but flawed as it
doesn't work in multilib builds. Instead we can use PKGDATA_DIR since
this is consistent over multilib builds. It also turns out to be
slightly neater code too. Hopefully this resolves the problem once and
for all.
(From OE-Core rev: 6cccae3ca54c1177a1d91d23c3e151d74e735ee9)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>