package/openldap: fix static linking wih atomics

package/openldap: fix static linking wih atomics

openldap uses its own libtool, static build with atomic fails with our
patches since February 6th 2019 on:

/bin/sh ../../libtool --mode=link /home/buildroot/autobuild/run/instance-0/output/host/bin/or1k-linux-gcc -static -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os   -static  -static   -o idtest idtest.o liblber.la ../../libraries/liblutil/liblutil.a -L/home/buildroot/autobuild/run/instance-0/output/host/bin/../or1k-buildroot-linux-uclibc/sysroot/usr/lib -lssl -L/home/buildroot/autobuild/run/instance-0/output/host/bin/../or1k-buildroot-linux-uclibc/sysroot/usr/lib -lz -pthread -latomic -lcrypto -lz -pthread -latomic

/home/buildroot/autobuild/run/instance-0/output/host/bin/or1k-linux-gcc -static -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -static -static -o etest etest.o -pthread -pthread ./.libs/liblber.a -L/home/buildroot/autobuild/run/instance-0/output/host/bin/../or1k-buildroot-linux-uclibc/sysroot/usr/lib ../../libraries/liblutil/liblutil.a -lssl -lcrypto -lz -pthread /home/buildroot/autobuild/run/instance-0/output/host/opt/ext-toolchain/bin/../lib/gcc/or1k-buildroot-linux-uclibc/5.4.0/../../../../or1k-buildroot-linux-uclibc/lib//libatomic.so

To fix this error, revert the openldap commit that raises this issue

Fixes:
 - http://autobuild.buildroot.org/results/ab4f85fd21cacfaef6b0b43a38da6a4a1d32ecb6

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>