Pull OpenRISC update from Stafford Horne:
 "Just one change for 4.19: refactoring from Christoph Hellwig to use
  generic DMA facilities"

* tag 'for-linus' of git://github.com/openrisc/linux:
  openrisc: use generic dma_noncoherent_ops
  openrisc: fix cache maintainance the the sync_single_for_device DMA operation
  openrisc: remove the no-op unmap_page and unmap_sg DMA operations
  openrisc: remove the sync_single_for_cpu DMA operation