dawn: bump version

The rrm_nr_get_own call was not parsed correctly.

Signed-off-by: Nick Hainke <vincent@systemli.org>

net/dawn/Makefile

@@ -5,13 +5,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=dawn
-PKG_SOURCE_DATE:=2020-08-26
+PKG_SOURCE_DATE:=2020-09-03
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/berlin-open-wireless-lab/DAWN.git
-PKG_SOURCE_VERSION:=c2c0009d613a59e282c9ee429928bf1b7edea025
-PKG_MIRROR_HASH:=620059cad972ab0c6dc313995bf059dc0f470eeb1eae2d1f3b4d1bac34a21d36
+PKG_SOURCE_VERSION:=b639145ce90230e693c41e71624ea0c0798c424d
+PKG_MIRROR_HASH:=e31113da86e4b3b013d073f288d0d77315ce67830b0fc669fa96917667a03d9c
 
 PKG_MAINTAINER:=Nick Hainke <vincent@systemli.org>
 PKG_LICENSE:=GPL-2.0-only