package/exim: add SELinux module

Support for exim is added by the services/exim module in the SELinux
refpolicy.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/exim/exim.mk

@@ -10,6 +10,7 @@ EXIM_SITE = https://ftp.exim.org/pub/exim/exim4
 EXIM_LICENSE = GPL-2.0+
 EXIM_LICENSE_FILES = LICENCE
 EXIM_CPE_ID_VENDOR = exim
+EXIM_SELINUX_MODULES = exim
 EXIM_DEPENDENCIES = host-berkeleydb host-pcre pcre berkeleydb host-pkgconf
 
 # Modify a variable value. It must already exist in the file, either