panfrost: Add panfrost_compile_inputs->no_idvs option

panvk will want IDVS support eventually, but not right now. Allow the
driver to opt out of IDVS in the mean time.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14154>

src/panfrost/util/pan_ir.h

@@ -158,6 +158,7 @@ struct panfrost_compile_inputs {
         } blend;
         unsigned sysval_ubo;
         bool shaderdb;
+        bool no_idvs;
         bool no_ubo_to_push;
 
         enum pipe_format rt_formats[8];

src/panfrost/vulkan/panvk_vX_shader.c

@@ -469,6 +469,7 @@ panvk_per_arch(shader_create)(struct panvk_device *dev,
    struct panfrost_compile_inputs inputs = {
       .gpu_id = pdev->gpu_id,
       .no_ubo_to_push = true,
+      .no_idvs = true, /* TODO */
       .sysval_ubo = sysval_ubo,
    };