rpm: realpath is required before expanding _dbpath in chroot
A regression is introduced by commit
66573093:
[ rpm: Fix rpm relocation macro usage ]
_usr turned out to be a relative path to support dyanmic config after
that, but it's being used somewhere as a indicator to locate substrings,
so we must get the real path of it in advance.
(From OE-Core rev:
1247955a907f51aac7efd305d26856e263c11a65)
Signed-off-by: Ming Liu <ming.liu@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
