meson: fix vdrm inclusion logic

This is about which driver use vdrm, not which OS we're on.

Fixes the build on non-KMS/DRM system.

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12899
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35723>

meson.build

@@ -287,6 +287,13 @@ if freedreno_kmds.length() != 0 and freedreno_kmds != [ 'msm' ] and with_freedre
   endif
 endif
 
+with_vdrm = [
+  with_amdgpu_virtio,
+  freedreno_kmds.contains('virtio'),
+  with_gallium_asahi,
+  with_asahi_vk,
+].contains(true)
+
 with_dri = false
 if with_gallium and system_has_kms_drm
   _glx = get_option('glx')

src/meson.build

@@ -69,7 +69,7 @@ endif
 if with_any_intel
   subdir('intel')
 endif
-if system_has_kms_drm or with_gallium_virgl or with_virtio_vk
+if with_vdrm or with_gallium_virgl or with_virtio_vk
   subdir('virtio')
 endif
 if with_gallium_radeonsi or with_amd_vk or with_gallium_r300 or with_gallium_r600