x86_64: Make sure /lib64 directory/symlink exists.

Changelog: None
Signed-off-by: Drew Moseley <drew.moseley@northern.tech>

configs/generic_x86-64_hdd_config

@@ -38,3 +38,14 @@ MENDER_STORAGE_TOTAL_SIZE_MB=16000
 
 # Nothing to copy
 MENDER_COPY_BOOT_GAP="n"
+
+function platform_modify() {
+    #
+    # Make sure /lib64 exists since the Mender binary requires it.
+    # Some systems put everything under /lib (ie Yocto) and a simple
+    # symlink is enough to find everything Mender needs.
+    #
+    if [ ! -e work/rootfs/lib64 ]; then
+        run_and_log_cmd "ln -s /lib work/rootfs/lib64"
+    fi
+}