meson: ensure that xmlpool_options.h is generated for gallium targets that need it

Fixes: 68076b8747 "meson: build gallium vdpau state tracker"
Fixes: 22a817af8a "meson: build gallium xvmc state tracker"
Fixes: 5a785d51a6 "meson: build gallium va state tracker"
Fixes: 0ba909f0f1 "meson: build gallium xa state tracker"
Fixes: 1d36dc674d "meson: build gallium omx state tracker"
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

src/gallium/targets/omx/meson.build

@@ -32,7 +32,7 @@ endif
 
 libomx_gallium = shared_library(
   'omx_mesa',
-  'target.c',
+  ['target.c', xmlpool_options_h],
   c_args : c_vis_args,
   cpp_args : cpp_vis_args,
   link_args : [omx_link_args, ld_args_gc_sections],

src/gallium/targets/va/meson.build

@@ -33,7 +33,7 @@ endif
 
 libva_gallium = shared_library(
   'gallium_drv_video',
-  'target.c',
+  ['target.c', xmlpool_options_h],
   c_args : c_vis_args,
   cpp_args : cpp_vis_args,
   link_args : [va_link_args, ld_args_gc_sections],

src/gallium/targets/vdpau/meson.build

@@ -38,7 +38,7 @@ endif
 
 libvdpau_gallium = shared_library(
   'vdpau_gallium',
-  'target.c',
+  ['target.c', xmlpool_options_h],
   c_args : c_vis_args,
   cpp_args : cpp_vis_args,
   link_args : [vdpau_link_args, ld_args_gc_sections],

src/gallium/targets/xa/meson.build

@@ -34,7 +34,7 @@ _xa_version = '.'.join(xa_version)
 
 libxatracker = shared_library(
   'xatracker',
-  'target.c',
+  ['target.c', xmlpool_options_h],
   c_args : c_vis_args,
   cpp_args : cpp_vis_args,
   link_args : [xa_link_args, ld_args_gc_sections],

src/gallium/targets/xvmc/meson.build

@@ -33,7 +33,7 @@ endif
 
 libxvmc_gallium = shared_library(
   'XvMCgallium',
-  'target.c',
+  ['target.c', xmlpool_options_h],
   c_args : c_vis_args,
   cpp_args : cpp_vis_args,
   link_args : [xvmc_link_args, ld_args_gc_sections],