MFC r268314:
Fix some compile warnings.

Sponsored by:	Mellanox Technologies
MFC r268315:
Fix compile warning.

Sponsored by:	Mellanox Technologies
MFC r268316:
Fix OFED startup order: All SYSINIT()'s and modules should be loaded
prior to starting "/sbin/init" which will run all the "/etc/rc.d/xxx"
scripts. Else there can be a race configuring the interfaces via
"/etc/rc.conf".

Sponsored by:	Mellanox Technologies
MFC r257594:
Add description of two EHCI PCI IDs.