qat: Update firmware for 4xxx devices to version 1.1.20

Key features:

• added zeropadding feature for compression
• added partial decompression support
• added DC rate limiting support
• added Admin ME capabilities reporting
• added Hash+Compress chaining support

MFC after: 2 weeks
Sponsored by: Intel Corporation
Differential Revision: https://reviews.freebsd.org/D42864

(cherry picked from commit 5437c3b6adade1d72971fa214ead90a0296c79f3)