build: Build etnaviv drm

Signed-off-by: Guido Günther <guido.gunther@puri.sm>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
diff --git a/meson.build b/meson.build
index 2303829..f0fa57c 100644
--- a/meson.build
+++ b/meson.build
@@ -1163,13 +1163,11 @@
 dep_libdrm_amdgpu = null_dep
 dep_libdrm_radeon = null_dep
 dep_libdrm_nouveau = null_dep
-dep_libdrm_etnaviv = null_dep
 dep_libdrm_intel = null_dep
 
 _drm_amdgpu_ver = '2.4.97'
 _drm_radeon_ver = '2.4.71'
 _drm_nouveau_ver = '2.4.66'
-_drm_etnaviv_ver = '2.4.89'
 _drm_intel_ver = '2.4.75'
 _drm_ver = '2.4.75'
 
@@ -1179,7 +1177,6 @@
   ['radeon', (with_gallium_radeonsi or with_dri_r100 or with_dri_r200 or
               with_gallium_r300 or with_gallium_r600)],
   ['nouveau', (with_gallium_nouveau or with_dri_nouveau)],
-  ['etnaviv', with_gallium_etnaviv],
 ]
 
 # VC4 only needs core libdrm support of this version, not a libdrm_vc4
@@ -1188,6 +1185,11 @@
   _drm_ver = '2.4.89'
 endif
 
+# etnaviv only needs core libdrm
+if with_gallium_etnaviv
+  _drm_ver = '2.4.89'
+endif
+
 # Loop over the enables versions and get the highest libdrm requirement for all
 # active drivers.
 _drm_blame = ''