meson,nvk: Require rustc-hash 2.0 or later

rustc-hash 1.1 does not have FxBuildHasher, and 1.2 has been yanked from
crates.io. I've verified that version 2.0 builds and seems to work, so
set the required version as 2.0.

Fixes: c1f979d84a ("nak: Add a dependency on rustc-hash")
Reviewed-by: @LingMan
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36650>
(cherry picked from commit 9a579673dd)

.pick_status.json

@@ -6064,7 +6064,7 @@
         "description": "meson,nvk: Require rustc-hash 2.0 or later",
         "nominated": true,
         "nomination_type": 2,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "c1f979d84a78bfdd308f107ae6ce3f779d9411bf",
         "notes": null

src/nouveau/compiler/meson.build

@@ -8,6 +8,7 @@ dep_paste = dependency('paste',
 )
 
 dep_rustc_hash = dependency('rustc-hash',
+  version: '>= 2.0',
   fallback: ['rustc-hash', 'dep_rustc_hash'],
   required: true,
 )