anv: fix number of planes for depth & stencil

We're not counting correctly with depth & stencil images.

Additionally we need to move an assert that is meant just for color
attachments.

v2: Move an assert() (Reported by Craig)
    Change aspect mask checks (Francesco)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: a62a979335 ("anv: enable multiple planes per image/imageView")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105994
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

src/intel/vulkan/genX_cmd_buffer.c

@@ -1248,13 +1248,13 @@ genX(cmd_buffer_setup_attachments)(struct anv_cmd_buffer *cmd_buffer,
 
          struct anv_image_view *iview = framebuffer->attachments[i];
          anv_assert(iview->vk_format == att->format);
-         anv_assert(iview->n_planes == 1);
 
          const uint32_t num_layers = iview->planes[0].isl.array_len;
          state->attachments[i].pending_clear_views = (1 << num_layers) - 1;
 
          union isl_color_value clear_color = { .u32 = { 0, } };
          if (att_aspects & VK_IMAGE_ASPECT_ANY_COLOR_BIT_ANV) {
+            anv_assert(iview->n_planes == 1);
             assert(att_aspects == VK_IMAGE_ASPECT_COLOR_BIT);
             color_attachment_compute_aux_usage(cmd_buffer->device,
                                                state, i, begin->renderArea,