MFC r338954, r340651, r344524, r345083.

r338954:
cxgbe(4): Enable support for per-connection rate limiting in the default
firmware configuration files.

Approved by: re@ (gjb@)
Sponsored by: Chelsio Communications

r340651:
cxgbe(4): Update T4/5/6 firmwares to 1.22.0.3.

Obtained from: Chelsio Communications
Sponsored by: Chelsio Communications

r344524:
cxgbe(4): Updates to the default and hashfilter configurations.

• Do not use nvf = 4 as it is not really supported by the firmware. Firmwares 1.23.3.0 and above will ignore it silently.
• Increase PF4's share of the VIs and let it use all of the RSS table.

Sponsored by: Chelsio Communications

r345083:
cxgbe(4): Update T4/5/6 firmwares to 1.23.0.0.

Obtained from: Chelsio Communications
Sponsored by: Chelsio Communications