turnip: consider multiview_mask when clearing depth-stencil attachment
Otherwise only first layer is being cleared. Because only
fb->layers count of layers would be cleared and
layers == 1 for multiview case:
width, height and layers define the dimensions of the framebuffer. If the render pass uses multiview, then layers must be one and each attachment requires a number of layers that is greater than the maximum bit index set in the view mask in the subpasses in which it is used.
Would fix several