misc: poky/LICENSE has changed.. reference a hopefully more stable file

Only reference the COPYING.MIT as it is unlikely to change in
the next upgrade.
diff --git a/recipes-osmocom/osmo-service-respawn/osmo-service-respawn_1.0.bb b/recipes-osmocom/osmo-service-respawn/osmo-service-respawn_1.0.bb
index 8779f34..52d1031 100644
--- a/recipes-osmocom/osmo-service-respawn/osmo-service-respawn_1.0.bb
+++ b/recipes-osmocom/osmo-service-respawn/osmo-service-respawn_1.0.bb
@@ -1,7 +1,7 @@
 DESCRIPTION = "Shell script to start, nice and respawn services"
 HOMEPAGE = "http://openbsc.osmocom.org/"
 LICENSE = "AGPLv3+"
-LIC_FILES_CHKSUM = "file://${COREBASE}/LICENSE;md5=3f40d7994397109285ec7b81fdeb3b58"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
 
 SRC_URI = "file://osmo-service-respawn.sh"