qat: Add Intel® 4xxx Series VF driver support

[markj]

Summary

Overview:
Intel(R) QuickAssist Technology (Intel(R) QAT) provides hardware
acceleration for offloading security, authentication and compression
services from the CPU, thus significantly increasing the performance and
efficiency of standard platform solutions.

This commit introduces:

• Intel® 4xxx Series VF driver support.
• Device configurability via sysctls.
• UIO support for Intel® 4xxx Series devices.

Patch co-authored by: Krzysztof Zdziarski <[e-mail]>
Patch co-authored by: Michal Gulbicki <[e-mail]>
Patch co-authored by: Julian Grajkowski <[e-mail]>
Patch co-authored by: Piotr Kasierski <[e-mail]>
Patch co-authored by: Lukasz Kolodzinski <[e-mail]>
Patch co-authored by: Karol Grzadziel <[e-mail]>

[markj]

How was the driver tested? I don't have access to this hw so can't do anything myself.

share/man/man4/qat.4

116

Missing a period here.

129

Sentences should always start on a new line.

[krzysztofx.zdziarski_intel.com]

Updated qat.4 man page

[krzysztofx.zdziarski_intel.com]

In D39850#908124, @markj wrote:

How was the driver tested? I don't have access to this hw so can't do anything myself.

In addition to proprietary (internal) testing the 0x4941 and 0x4943 VF drivers were tested with KTL, geom/eli and netipsec test suites as well.

[markj]

Committed here: https://cgit.freebsd.org/src/commit/?id=266b0663c598b7e50c2998974c16f89b7ac23e3a

I don't know why the review didn't auto-close. @krzysztofx.zdziarski_intel.com do you mind close it manually? I can't do that without taking over the review.