st/vdpau: add HEVC support v2

v2: fix return code

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
diff --git a/configure.ac b/configure.ac
index 4e751e3..7ddb47a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -81,7 +81,7 @@
 GLPROTO_REQUIRED=1.4.14
 LIBOMXIL_BELLAGIO_REQUIRED=0.0
 LIBVA_REQUIRED=0.35.0
-VDPAU_REQUIRED=0.4.1
+VDPAU_REQUIRED=1.1
 WAYLAND_REQUIRED=1.2.0
 XCB_REQUIRED=1.9.3
 XCBDRI2_REQUIRED=1.8