[VOL-5255] - Use all uplink interfaces not only interface 0 at OLT

Link to original MR:
https://gerrit.opencord.org/c/voltha-protos/+/34960
https://gerrit.opencord.org/c/voltha-protos/+/34992

Change-Id: Iae3c0b27a4ab033e6954dc39df005b05f6e59010
Signed-off-by: Sridhar Ravindra <sridhar.ravindra@radisys.com>
diff --git a/VERSION b/VERSION
index 803d94e..1f8428b 100755
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.6.3
+5.6.4