new DMA API conversion for nvme-pci v3

[Chaitanya Kulkarni]

>>> Applied, thanks!
>>>
>>> [1/8] block: don't merge different kinds of P2P transfers in a single bio
>>>        commit: 226d6099402d8de166af60b2794fc198360d98fb
>>> [2/8] block: add scatterlist-less DMA mapping helpers
>>>        commit: d6c12c69ef4fa33e32ceda4a53991ace01401cd9
>>> [3/8] nvme-pci: refactor nvme_pci_use_sgls
>>>        commit: 07c81cbf438b769e0d673be3b5c021a424a4dc6f
>>> [4/8] nvme-pci: merge the simple PRP and SGL setup into a common helper
>>>        commit: 06cae0e3f61c4c1ef18726b817bbb88c29f81e57
>>> [5/8] nvme-pci: remove superfluous arguments
>>>        commit: 07de960ac7577662c68f1d21bd4907b8dfc790c4
>>> [6/8] nvme-pci: convert the data mapping to blk_rq_dma_map
>>>        commit: 235118de382d6545d3822ead0571a05e017ed8f1
>>> [7/8] nvme-pci: replace NVME_MAX_KB_SZ with NVME_MAX_BYTE
>>>        commit: d1df6bd4c551110e0d1b06ee85c7bca057439d28
>>> [8/8] nvme-pci: rework the build time assert for NVME_MAX_NR_DESCRIPTORS
>>>        commit: 0c34198a16a88878aba455bebe157037c9ab52c5
>>>
>>> Best regards,
>> Do you still accept new tags/trailers?
> Even if they don't always end up in the git tree, please do provide
> them. This thread is linked from there anyway, so it still provides
> value.
>

It took sometime for me to finish the perf testing hope they are helpful.

I'll submit the blktest for SGL and PRP testing with different blksizes
so we can make that part of the driver test-proof for every release.

-ck