anv: Set the Shader capability when compiling the FP64 shader

Otherwise the SPIR-V parser prints a warning the first time the driver
is loaded after a fresh compile.

Fixes: 91b62e9868 ("anv: Use spirv_capabilities for the float64 shader")
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36783>
(cherry picked from commit 94931fd4f4)

.pick_status.json

@@ -1924,7 +1924,7 @@
         "description": "anv: Set the Shader capability when compiling the FP64 shader",
         "nominated": true,
         "nomination_type": 2,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "91b62e986867ba12dad20789e51f978f1883f38c",
         "notes": null

src/intel/vulkan/anv_pipeline_cache.c

@@ -653,6 +653,7 @@ anv_load_fp64_shader(struct anv_device *device)
       .Int8 = true,
       .Int16 = true,
       .Int64 = true,
+      .Shader = true,
    };
 
    struct spirv_to_nir_options spirv_options = {