Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

Merge remote-tracking branch 'remotes/jnsnow/tags/ide-pull-request' into staging

Pull request

# gpg: Signature made Fri 08 Jun 2018 18:46:24 BST
# gpg:                using RSA key 7DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>"
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jnsnow/tags/ide-pull-request: (30 commits)
  ide: introduce ide_transfer_start_norecurse
  atapi: call ide_set_irq before ide_transfer_start
  ide: make ide_transfer_stop idempotent
  ide: call ide_cmd_done from ide_transfer_stop
  ide: push end_transfer_func out of start_transfer callback, rename callback
  ahci: move PIO Setup FIS before transfer, fix it for ATAPI commands
  libqos/ahci: track sector size
  MAINTAINERS: Add the cdrom-test to John's section
  tests/cdrom-test: Test that -cdrom parameter is working
  tests/cdrom-test: Test booting from CD-ROM ISO image file
  tests/boot-sector: Add magic bytes to s390x boot code header
  ahci: make ahci_mem_write traces more descriptive
  ahci: delete old host register address definitions
  ahci: adjust ahci_mem_write to work on registers
  ahci: fix spacing damage on ahci_mem_write
  ahci: make mem_read_32 traces more descriptive
  ahci: modify ahci_mem_read_32 to work on register numbers
  ahci: fix host register max address
  ahci: add host register enumeration
  ahci: delete old port register address definitions
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>