fontconfig: security bump to version 2.12.1

Fixes:
CVE-2016-5384 - possible double free due to insufficiently validated
cache files.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/fontconfig/fontconfig.hash

@@ -1,2 +1,2 @@
-# From http://lists.freedesktop.org/archives/fontconfig/2014-March/005167.html
-sha256	b6b066c7dce3f436fdc0dfbae9d36122b38094f4f53bd8dffd45e195b0540d8d	fontconfig-2.11.1.tar.gz
+# From https://lists.freedesktop.org/archives/fontconfig/2016-August/005794.html
+sha256	b449a3e10c47e1d1c7a6ec6e2016cca73d3bd68fbbd4f0ae5cc6b573f7d6c7f3	fontconfig-2.12.1.tar.bz2

package/fontconfig/fontconfig.mk

@@ -4,8 +4,9 @@
 #
 ################################################################################
 
-FONTCONFIG_VERSION = 2.11.1
+FONTCONFIG_VERSION = 2.12.1
 FONTCONFIG_SITE = http://fontconfig.org/release
+FONTCONFIG_SOURCE = fontconfig-$(FONTCONFIG_VERSION).tar.bz2
 FONTCONFIG_INSTALL_STAGING = YES
 FONTCONFIG_DEPENDENCIES = freetype expat host-pkgconf
 HOST_FONTCONFIG_DEPENDENCIES = host-freetype host-expat host-pkgconf