MFC r308797-308799,309082

MFC r308797-308799,309082

Approved by:	sephe (mentor)

    r308797
    update the hv_vmbus(4) manual by adding a dependency on pci

    We enhanced the vmbus driver to support PCIe pass-through recently.

    Reviewed by:        sephe
    Approved by:        sephe (mentor)
    Sponsored by:       Microsoft

    r308798
    remove the hv_ata_pci_disengage(4) manual

    A few months ago, we removed the driver, which was not necessary any longer.

    Reviewed by:        sephe
    Approved by:        sephe (mentor)
    Sponsored by:       Microsoft

    r308799
    fix share/man/man4/Makefile for hv_ata_pci_disengage.4

    We need to remove the line since we removed the related manual just now.

    Reviewed by:        sephe
    Approved by:        sephe (mentor)
    Sponsored by:       Microsoft

    r309082
    share/man/man4/Makefile: Only install Hyper-V man pages on amd64 and i386

    We shouldn't install them on the architectures not supported by Hyper-V.

    And, hv_ata_pci_disengage.4.gz should be removed from all architectures:
    1) It should have only applied to Hyper-V;
    2) For Hyper-V platforms (amd64 and i386), the related driver was removed by
    r306426 | sephe | 2016-09-29 09:41:52 +0800 (Thu, 29 Sep 2016),
    because now we have a better mechanism to disble the ata driver for hard
    disks when the VM runs on Hyper-V.

    Reviewed by:        sephe, andrew, jhb
    Approved by:        sephe (mentor)
    Sponsored by:       Microsoft
    Differential Revision:      https://reviews.freebsd.org/D8572

git-svn-id: svn://svn.freebsd.org/base/stable/10@309317 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f