mkinitramfs: Use cp -p option for ld.so.conf* instead of -aZ

This is consistent with all the other copies into the initramfs.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

mkinitramfs

@@ -362,7 +362,7 @@ depmod -a -b "${DESTDIR}" "${version}"
 rm -f "${DESTDIR}/lib/modules/${version}"/modules.*map
 
 # make sure that library search path is up to date
-cp -aZ /etc/ld.so.conf* "$DESTDIR"/etc/
+cp -pPr /etc/ld.so.conf* "$DESTDIR"/etc/
 if ! ldconfig -r "$DESTDIR" ; then
 	[ "$(id -u)" != "0" ] \
 	&& echo "ldconfig might need uid=0 (root) for chroot()" >&2