bnxt_en: New Broadcom ethernet driver.

bnxt_en: New Broadcom ethernet driver.

Orabug: 23221795

Broadcom ethernet driver for the new family of NetXtreme-C/E
ethernet devices.

v5:
 - Removed empty blank lines at end of files (noted by David Miller).
 - Moved busy poll helper functions to bnxt.h to at least make the
 .c file look less cluttered with #ifdef (noted by Stephen Hemminger).

v4:
 - Broke up 2 long message strings with "\n" (suggested by John Linville)
 - Constify an array of strings (suggested by Stephen Hemminger)
 - Improve bnxt_vf_pciid() (suggested by Stephen Hemminger)
 - Use PCI_VDEVICE() to populate pci_device_id table for more compact
   source.

v3:
 - Fixed 2 more sparse warnings.
 - Removed some unused structures in .h files.

v2:
 - Fixed all kbuild test robot reported warnings.
 - Fixed many of the checkpatch.pl errors and warnings.
 - Fixed the Kconfig description (noted by Dmitry Kravkov).

Acked-by: Eddie Wai <eddie.wai@broadcom.com>
Acked-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[Upstream commit c0c050c58d840994ba842ad1c338a98e7c12b764]

Signed-off-by: Brian Maly <brian.maly@oracle.com>