[S] Change in blobs[main]: soc/mediatek/mt8196: Add libbl31.a version 16174.21.0

[Yidi Lin (Code Review)]

Attention is currently required from: Jarried Lin, Yu-Ping Wu.

Yidi Lin has posted comments on this change by Gavin Liu. ( https://review.coreboot.org/c/blobs/+/86382?usp=email )

Change subject: soc/mediatek/mt8196: Add libbl31.a version 16174.21.0
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Patch Set 3:

(2 comments)

Commit Message:

https://review.coreboot.org/c/blobs/+/86382/comment/096ff7f5_b0e7c5d2?usp=em... :
PS3, Line 9: The static library that contains Mediatek private drivers in
           : ARM-Trusted-Firmware
The libbl31.a is a static library that contains MediaTek proprietary drivers for ARM trusted firmware. The feature includes:

File soc/mediatek/mt8196/README.md:

https://review.coreboot.org/c/blobs/+/86382/comment/b8302b03_a3b53f73?usp=em... :
PS3, Line 297: linked with `bl31.elf`.
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