package/libdrm: bump version to 2.4.68

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libdrm/libdrm.hash

@@ -1,2 +1,2 @@
-# From https://lists.freedesktop.org/archives/dri-devel/2016-February/100859.html
-sha256	ee5b71e1113be37544d0752681c12f040c01f782e2933df7d7bc21fd0d10cebe	libdrm-2.4.67.tar.bz2
+# From https://lists.freedesktop.org/archives/dri-devel/2016-April/106211.html
+sha256	5b4bd9a5922929bc716411cb74061fbf31b06ba36feb89bc1358a91a8d0ca9df	libdrm-2.4.68.tar.bz2

package/libdrm/libdrm.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBDRM_VERSION = 2.4.67
+LIBDRM_VERSION = 2.4.68
 LIBDRM_SOURCE = libdrm-$(LIBDRM_VERSION).tar.bz2
 LIBDRM_SITE = http://dri.freedesktop.org/libdrm
 LIBDRM_LICENSE = MIT