meson: require libdrm_amdgpu 2.4.99 for Navi

Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>

meson.build

@@ -1133,7 +1133,7 @@ dep_libdrm_radeon = null_dep
 dep_libdrm_nouveau = null_dep
 dep_libdrm_intel = null_dep
 
-_drm_amdgpu_ver = '2.4.97'
+_drm_amdgpu_ver = '2.4.99'
 _drm_radeon_ver = '2.4.71'
 _drm_nouveau_ver = '2.4.66'
 _drm_intel_ver = '2.4.75'