MFC r360787, r360851, r360870-r360872

r360787:
linuxkpi: Add pci_iomap and pci_iounmap

Those function are use to map/unmap io region of a pci device.
Different resource can be mapped depending on the bar so use a
tailq to store them all.

Sponsored-by: The FreeBSD Foundation

Reviewed by: emaste, hselasky
Differential Revision: https://reviews.freebsd.org/D24696

r360851:
linuxkpi: Add bitmap_copy and bitmap_andnot

bitmap_copy simply copy the bitmaps, no idea why it exists.
bitmap_andnot is similar to bitmap_and but uses !src2.

Sponsored-by: The FreeBSD Foundation
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D24782

r360870:
linuxkpi: Add bitmap_alloc and bitmap_free

This is a simple call to kmallock_array/kfree, therefore include linux/slab.h as
this is where the kmalloc_array/kfree definition is.

Sponsored-by: The FreeBSD Foundation
Reviewed by: hselsasky
Differential Revision: https://reviews.freebsd.org/D24794

r360871:
linuxkpi: Really add bitmap_alloc and bitmap_zalloc

This was missing in r360870

Sponsored-by: The FreeBSD Foundation

r360872:
qnlx: Do not redifines types.

r360870 added linux/slab.h into liunx/bitmap.h and this include linux/types.h
The qlnx driver is redefining some of those types so remove them and add an
explicit linux/types.h include.

Pointy hat: manu
Reported by: Austin Shafer <ashafer@badland.io>