v3dv: fix job subpass index for vkCmdClearAttachments jobs

We had changed the interface for job starts so they take the subpass index
rather than a boolean indicating whether the job starts a new subpas, but we
forgot to update this accordingly.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
diff --git a/src/broadcom/vulkan/v3dv_meta_clear.c b/src/broadcom/vulkan/v3dv_meta_clear.c
index f00fd35..00ef277 100644
--- a/src/broadcom/vulkan/v3dv_meta_clear.c
+++ b/src/broadcom/vulkan/v3dv_meta_clear.c
@@ -407,7 +407,7 @@
    struct v3dv_frame_tiling subpass_tiling;
    memcpy(&subpass_tiling, &job->frame_tiling, sizeof(subpass_tiling));
 
-   job = v3dv_cmd_buffer_start_job(cmd_buffer, false);
+   job = v3dv_cmd_buffer_start_job(cmd_buffer, cmd_buffer->state.subpass_idx);
 
    /* vkCmdClearAttachments runs inside a render pass */
    job->is_subpass_continue = true;
@@ -425,7 +425,7 @@
    /* Make sure we have an active job to continue the render pass recording
     * after the clear.
     */
-   job = v3dv_cmd_buffer_start_job(cmd_buffer, false);
+   job = v3dv_cmd_buffer_start_job(cmd_buffer, cmd_buffer->state.subpass_idx);
 
    v3dv_job_start_frame(job,
                         subpass_tiling.width,