vk/device: Emit PIPE_CONTROL flushes surrounding new STATE_BASE_ADDRESS

vk/device: Emit PIPE_CONTROL flushes surrounding new STATE_BASE_ADDRESS

According to the bspec, you're supposed to emit a PIPE_CONTROL with a CS
stall and a render target flush prior to chainging STATE_BASE_ADDRESS.  A
little experimentation, however, shows that this is not enough.  It also
appears as if you have to flush the texture cache after chainging base
address or things won't propagate properly.