package/apr-util: needs engine support when built with libopenssl
Buildroot commit 623d3bbe43e9193aa8e3395367d01af59071b859 disables
engine support when BR2_PACKAGE_LIBOPENSSL_ENGINES is not set.
Fixes:
http://autobuild.buildroot.net/results/e472618ca9ff4a3cf460f607a8dfa317832ca622/
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>