Fix swupdate revision in git recipe

For released branches, replace ${AUTOREV} with the
last tag in the development branch.

Signed-off-by: Stefano Babic <sbabic@denx.de>

recipes-support/swupdate/swupdate_git.bb

@@ -1,4 +1,5 @@
 require swupdate.inc
 
-SRCREV = "${AUTOREV}"
+# this is 2016.10-rc1
+SRCREV = "8abacd3613410002c0cd05a12e82d695d3e4bf6f"