Comment 5 for bug 1685723

The following landed in 4.16-rc1 and would need to be considered for backporting. Adding a linux task for Bionic.

10f21df4a23540b5da8e88d1030ff8c37818e04f mmc: block: blk-mq: Add support for direct completion
88a516461ee07a994c0e7016faf85f3466de1d09 mmc: block: blk-mq: Separate card polling from recovery
c89b4851c67fb7354862850ae181de883269487d mmc: block: Make card_busy_detect() accumulate all response error bits
f47a1fe346b1568df0e9b158574b2939432313df mmc: block: blk-mq: Check error bits and save the exception bit when polling card busy
7701885e56cee3de4447c0653f9059b62844983b mmc: block: Check the timeout correctly in card_busy_detect()
0987c6b046e199b9b922a585c62e9503486fe0bc mmc: block: Check for transfer state in card_busy_detect()
92c0a0cc9483c6b9cc1b61273d30a0a601cb5e15 mmc: block: Add timeout_clks when calculating timeout
6b7a363d2ce83e3940dc0c3628e478fe95f23985 mmc: block: Reduce polling timeout from 10 minutes to 10 seconds
7eb43d537166c7d767af450901acd0ecbf94625c mmc: block: blk-mq: Stop using legacy recovery
42f532da3a44843668dbacc1838a028b0a9b7373 mmc: mmc_test: Do not use mmc_start_areq() anymore
d2383318c5a626312d166217e3788e54b1650c56 mmc: core: Ensure cmd_completion is initialized
23a185254ace8e63dc4ca36e0315aed9440ae749 mmc: mmc_test: Ensure command queue is disabled for testing
1bec43a3b181baebdf8a4cd739b480a9132601d7 mmc: core: Remove option not to use blk-mq
0fbfd12518303e9b32ac9fd231439459eac848f9 mmc: block: Remove code no longer needed after the switch to blk-mq
126b62700386da782f83579e9b0431ea76c2da3d mmc: core: Remove code no longer needed after the switch to blk-mq
0562315b86372d2cdd9cc8924b92cfab37049fbc mmc: cqhci: Ensure macro parameters are wrapped in parentheses