ath10k-firmware: WCN3990 hw1.0: Add board file for Lenovo S5 Pro

[Andrey Derkach]

Hi,

This is the board file for the Lenovo S5 Pro (L58041, "sprout"), a
smartphone with the Snapdragon 636 (SDM636) and a WCN3990 WiFi/BT chip.
It runs mainline Linux (sdm660-mainline tree, where this phone's device
tree lives); the WiFi node there will carry
qcom,calibration-variant = "Lenovo_S5_Pro".

* description for what hardware this is

  - Lenovo S5 Pro smartphone, SDM636 SoC, WCN3990 hw1.0, firmware
    WLAN.HL.1.0.1.c2-00455-QCAHLSWMTPLZ-1 from the phone's modem
    partition:

    ath10k_snoc 18800000.wifi: qmi chip_id 0x140 chip_family 0x4002 board_id 0xff soc_id 0x40050000
    ath10k_snoc 18800000.wifi: qmi fw_version 0x101f01c7 fw_build_timestamp 2018-06-30 21:40 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HL.1.0.1.c2-00455-QCAHLSWMTPLZ-1
    ath10k_snoc 18800000.wifi: wcn3990 hw1.0 target 0x00000008 chip_id 0x00000000 sub 0000:0000

* origin of the board file

  - /vendor/firmware/bdwlan_sprout.bin from the stock Android vendor
    partition, unmodified. On stock Android, Lenovo's cnss-daemon
    loads this file by name and sends it to the firmware; the
    generic BDWLAN.BIN in the modem image is not used.

* ids to be used with the board file

  - WCN3990 hw1.0

    + bus=snoc,qmi-board-id=ff,qmi-chip-id=140,variant=Lenovo_S5_Pro
      md5sum 5a5d3b3635edb6dbd195202987d60a7f
      sha256sum 40fc7198276b51c90e63c0698d2d9bacd08af68ae90100650695e6362a2273ec

* attach the actual board file

  - attached, the file name is the id string above plus ".bin"

Why it is needed: the generic bus=snoc,qmi-board-id=ff entry in
board-2.bin never brings this firmware up (no FW_READY). With the
modem image's BDWLAN.BIN the link stays at VHT-MCS 2 (TCP 58 Mbit/s
down, 49 Mbit/s up). With this file it runs at VHT-MCS 9, 152-155
Mbit/s down and 107-142 Mbit/s up; stock Android gets 170/155 on the
same spot and access point.

Tested with the variant set in the device tree and this file in a
local board-2.bin:

    ath10k_snoc 18800000.wifi: boot found board data for 'bus=snoc,qmi-board-id=ff,qmi-chip-id=140,variant=Lenovo_S5_Pro'

Thanks,
Andrey
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