vk: Use consistent names for anv_cmd_state dirty bits

vk: Use consistent names for anv_cmd_state dirty bits

Prefix all anv_cmd_state dirty bit tokens with ANV_CMD_DIRTY. For
example:

    old                           -> new
    ANV_DYNAMIC_VIEWPORT_DIRTY    -> ANV_CMD_DIRTY_DYNAMIC_VIEWPORT
    ANV_CMD_BUFFER_PIPELINE_DIRTY -> ANV_CMD_DIRTY_PIPELINE

Change type of anv_cmd_state::dirty and ::compute_dirty from uint32_t to
the self-documenting type anv_cmd_dirty_mask_t.