[PATCH xserver] build: Bump Mesa requirement to 17.1

[Adam Jackson]

gbm_bo_get_modifier is new in 17.1, which is 10 months old and two
stable branches ago.

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 configure.ac    | 2 +-
 glx/meson.build | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index f82c0a66a..18cfda69e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1113,7 +1113,7 @@ case "$DRI2,$HAVE_DRI2PROTO" in
 	yes,yes | auto,yes)
 		AC_DEFINE(DRI2, 1, [Build DRI2 extension])
 		DRI2=yes
-		LIBGL="gl >= 9.2.0"
+		LIBGL="gl >= 17.1"
 		SDK_REQUIRED_MODULES="$SDK_REQUIRED_MODULES $DRI2PROTO"
 		;;
 esac
diff --git a/glx/meson.build b/glx/meson.build
index 5f93a75a5..3b0618f67 100644
--- a/glx/meson.build
+++ b/glx/meson.build
@@ -39,7 +39,7 @@ if build_glx
             common_dep,
             dl_dep,
             dependency('glproto', version: '>= 1.4.17'),
-            dependency('gl', version: '>= 9.2.0'),
+            dependency('gl', version: '>= 17.1.0'),
         ],
         c_args: [
             glx_align64,
@@ -70,7 +70,7 @@ if build_glx
             common_dep,
             dl_dep,
             dependency('glproto', version: '>= 1.4.17'),
-            dependency('gl', version: '>= 9.2.0'),
+            dependency('gl', version: '>= 17.1.0'),
         ],
     )
 endif
-- 
2.16.2