erofs: support DEFLATE decompression by using Intel QAT

This patch introduces the use of the Intel QAT to offload EROFS data
decompression, aiming to improve the decompression performance.

A 285MiB dataset is used with the following command to create EROFS
images with different cluster sizes:
     $ mkfs.erofs -zdeflate,level=9 -C{4096,16384,65536,131072,262144}

Fio is used to test the following read patterns:
     $ fio -filename=testfile -bs=4k -rw=read -name=job1
     $ fio -filename=testfile -bs=4k -rw=randread -name=job1
     $ fio -filename=testfile -bs=4k -rw=randread --io_size=14m -name=job1

Here are some performance numbers for reference:

Processors: Intel(R) Xeon(R) 6766E (144 cores)
Memory:     512 GiB

|-----------------------------------------------------------------------------|
|           | Cluster size | sequential read | randread  | small randread(5%) |
|-----------|--------------|-----------------|-----------|--------------------|
| Intel QAT |    4096      |    538  MiB/s   | 112 MiB/s |     20.76 MiB/s    |
| Intel QAT |    16384     |    699  MiB/s   | 158 MiB/s |     21.02 MiB/s    |
| Intel QAT |    65536     |    917  MiB/s   | 278 MiB/s |     20.90 MiB/s    |
| Intel QAT |    131072    |    1056 MiB/s   | 351 MiB/s |     23.36 MiB/s    |
| Intel QAT |    262144    |    1145 MiB/s   | 431 MiB/s |     26.66 MiB/s    |
| deflate   |    4096      |    499  MiB/s   | 108 MiB/s |     21.50 MiB/s    |
| deflate   |    16384     |    422  MiB/s   | 125 MiB/s |     18.94 MiB/s    |
| deflate   |    65536     |    452  MiB/s   | 159 MiB/s |     13.02 MiB/s    |
| deflate   |    131072    |    452  MiB/s   | 177 MiB/s |     11.44 MiB/s    |
| deflate   |    262144    |    466  MiB/s   | 194 MiB/s |     10.60 MiB/s    |

Signed-off-by: Bo Liu <[email protected]>
Reviewed-by: Gao Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Gao Xiang: refine the commit message. ]
Signed-off-by: Gao Xiang <[email protected]>

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