radv: Use radv_fill_buffer for accel struct builds

It turns out, that the fuchsia sort may actually
perform clears with size < 16 which hits an assert
in radv_fill_buffer_shader. This fixes random
crashes in Control.

Fixes: be57b08 ("radv: Build accaleration structures using LBVH")
Signed-off-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16517>

src/amd/vulkan/radv_acceleration_structure.c

@@ -1939,11 +1939,10 @@ radix_sort_fill_buffer(VkCommandBuffer commandBuffer,
 {
    RADV_FROM_HANDLE(radv_cmd_buffer, cmd_buffer, commandBuffer);
 
-   assert(size % 4 == 0);
    assert(size != VK_WHOLE_SIZE);
 
-   radv_fill_buffer_shader(cmd_buffer, buffer_info->devaddr + buffer_info->offset + offset, size,
-                           data);
+   radv_fill_buffer(cmd_buffer, NULL, NULL, buffer_info->devaddr + buffer_info->offset + offset,
+                    size, data);
 }
 
 VkResult