package/libdrm: bump version to 2.4.91

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

package/libdrm/libdrm.hash

@@ -1,5 +1,5 @@
-# From https://lists.x.org/archives/xorg-announce/2018-February/002838.html
-md5 61dcb4989c728f566e3c15c236585a17  libdrm-2.4.90.tar.bz2
-sha1 7630ba36c65433251a0494b47086fbd0b32ff7a8  libdrm-2.4.90.tar.bz2
-sha256 db37ec8f1dbaa2c192ad9903c8d0988b858ae88031e96f169bf76aaf705db68b  libdrm-2.4.90.tar.bz2
-sha512 3d32d60c44ffdcb58667d0926e6af8d375332add1f243d8b2d37567aeef4e4b26d786294aeecf46c3dea94fc002fb73756567c457300703acfc21e32ffbd458c  libdrm-2.4.90.tar.bz2
+# From https://lists.x.org/archives/xorg-announce/2018-March/002853.html
+md5 23d87cda92700b710a37d9b8edaa9f54  libdrm-2.4.91.tar.bz2
+sha1 44e42ce3cd41666e343ba393c73f6f1ad9fe1e74  libdrm-2.4.91.tar.bz2
+sha256 634a0ed0cc1eff06f48674b1da81aafa661a9f001e7a4f43dde81076886dc800  libdrm-2.4.91.tar.bz2
+sha512 07578c00c121ba37033db7172590e26d1545f81c242bbce2cfb7fb904bde504822c275d6468e5c5d20360d0046ae73d9b058aa0459ba35eb11927141cc998772  libdrm-2.4.91.tar.bz2

package/libdrm/libdrm.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBDRM_VERSION = 2.4.90
+LIBDRM_VERSION = 2.4.91
 LIBDRM_SOURCE = libdrm-$(LIBDRM_VERSION).tar.bz2
 LIBDRM_SITE = https://dri.freedesktop.org/libdrm
 LIBDRM_LICENSE = MIT