package/exim: bump version to 4.85, add hash

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/exim/exim.hash

@@ -0,0 +1,2 @@
+# From https://lists.exim.org/lurker/message/20150113.003827.4a5d30e4.en.html
+sha256	13211f2bbc5400d095a9b4be075eb1347e0d98676fdfe4be8a3b4d56281daaa4	exim-4.85.tar.bz2

package/exim/exim.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-EXIM_VERSION = 4.84
+EXIM_VERSION = 4.85
 EXIM_SOURCE = exim-$(EXIM_VERSION).tar.bz2
 EXIM_SITE = ftp://ftp.exim.org/pub/exim/exim4
 EXIM_LICENSE = GPLv2+