iavf: Use the common RSS key without options RSSHEADmain

Use rss_getkey() when programming the RSS key through virtchnl regardless
of options RSS, matching the register-programming path.  The common key
is available independently of RSS queue placement; the driver-specific
default otherwise makes the chosen key depend on the PF's configuration
interface.

Remove the unused default-key helper and its declarations.  Preserve the
negotiated key length, zero padding, hash selections, and indirection-table
policy.

Reviewed by:	gallatin
MFC after:	2 weeks
Sponsored by:	BBOX.io
Differential Revision:	https://reviews.freebsd.org/D59790

0 files changed, 0 insertions, 0 deletions