gbm: depend on libdrm indepedent of dri2 setting

Suggested-by: @stefan11111
Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/10585
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30716>

src/gbm/meson.build

@@ -24,7 +24,6 @@ incs_gbm += inc_mesa
 
 if with_dri2
   files_gbm += files('backends/dri/gbm_dri.c', 'backends/dri/gbm_driint.h')
-  deps_gbm += dep_libdrm # TODO: pthread-stubs
 endif
 if with_platform_wayland
   deps_gbm += dep_wayland_server
@@ -44,7 +43,7 @@ libgbm = shared_library(
   c_args : [args_gbm],
   link_args : [ld_args_gc_sections],
   link_with : [libloader, libgallium_dri],
-  dependencies : [deps_gbm, dep_dl, dep_thread, idep_mesautil, idep_xmlconfig],
+  dependencies : [deps_gbm, dep_dl, dep_thread, dep_libdrm, idep_mesautil, idep_xmlconfig],
   gnu_symbol_visibility : 'hidden',
   version : '1.0.0',
   install : true,