ath11k: firmware variants for WCN6855 v2

[Sven Eckelmann]

Hi,

the EmWicon WMX7205 (Milan) seems to have a special board.bin from the 
manufacturer. But when using it, the firmware seems to crash:

    [   10.710206] ath11k_pci 0000:01:00.0: BAR 0: assigned [mem 0xd0000000-0xd01fffff 64bit]
    [   10.819230] ath11k_pci 0000:01:00.0: MSI vectors: 1
    [   10.840305] ath11k_pci 0000:01:00.0: wcn6855 hw2.0
    [   12.234095] ath11k_pci 0000:01:00.0: chip_id 0x2 chip_family 0xb board_id 0xff soc_id 0x400c0200
    [   12.242991] ath11k_pci 0000:01:00.0: fw_version 0x110c0b4c fw_build_timestamp 2021-11-24 04:24 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HSP.1.1-02892.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
    [   12.271180] ath11k_pci 0000:01:00.0: qmi failed to load CAL data file:cal-pci-0000:01:00.0.bin
    [   12.520852] ath11k_pci 0000:01:00.0: firmware crashed: MHI_CB_SYS_ERROR
    [   22.333795] ath11k_pci 0000:01:00.0: failed to wait board file download request: -110
    [   22.341751] ath11k_pci 0000:01:00.0: qmi failed to load bdf file
    [   22.347921] ath11k_pci 0000:01:00.0: failed to load board data file: -110

But they also provided a firmware which doesn't end with 
QCAHSPSWPL_V1_V2_SILICONZ_LITE-1 but with QCAHSPSWPL_V2_SILICONZ_CE-1. This 
firmware doesn't seem to crash with their board.bin.

Does anybody know whether the firmware QCAHSPSWPL_V2_SILICONZ_CE-1 (which 
cannot be found in Kalle's repository) is actually meant to work with ath11k? 
At least from past experience (with HK01), I know that the firmware for the 
proprietary driver is not meant to be used for ath11k and caused interesting 
crashes.

Kind regards,
	Sven
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