lpfc 8.3.19: Update lpfc to revision 8.3.19

This patch set updates the lpfc driver to revision 8.3.19

The patches for 8.3.19 contain:
- Fix critical errors and crashes
- Add latest SLI4 Hardware initialization support
- Add SLI4 FC Discovery support
- Added support for ELS RRQ command
- Change heartbeat to default to disabled
- Update lpfc driver version to 8.3.19

The bugfixes were cut against scsi-misc-2.6

-- james s