qcn9274: add Askey SBE1V1K BDF + regdb

[andrewjlamarche]

This adds support for the Askey SBE1V1k BDF + regdb. The files come from an eMMC dump of the vendor firmware:

• bdwlan.b0001
• bdwlan.b0002
• bdwlan.b0004
• regdb.bin

FileSize: 292244
FileCRC32: ea5f4fe5
FileMD5: 9bd02f540281b9f79f614d40b25fb575
BoardNames[0]: 'bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_1'
BoardLength[0]: 63488
BoardCRC32[0]: 6a4b4453
BoardMD5[0]: 414b34c8a811408e86948a84290f1a6c
BoardNames[1]: 'bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_4'
BoardLength[1]: 102400
BoardCRC32[1]: 07db1171
BoardMD5[1]: c8c33335995833f4abc4f3e73affa0cf
BoardNames[2]: 'bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_2'
BoardLength[2]: 100352
BoardCRC32[2]: e068ae3c
BoardMD5[2]: 0a783508f4322d617cf31d5e92d3a59e
RegdbNames[0]: 'bus=pci,qmi-chip-id=0,qmi-board-id=255'
RegdbLength[0]: 25656
RegdbCRC32[0]: 53b046cf
RegdbMD5[0]: 21775fd878da4c6066fcc154fe6c77f8

For reference, the board-2.json contained the following:

[
	{
		"board": [
			{
				"names": ["bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_1"],
				"data": "bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_1.bin"
			},
			{
				"names": ["bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_4"],
				"data": "bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_4.bin"
			},
			{
				"names": ["bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_2"],
				"data": "bus=pci,qmi-chip-id=0,qmi-board-id=255,variant=Askey-SBE1V1K_2.bin"
			}
		],
		"regdb": [
			{
				"names": ["bus=pci,qmi-chip-id=0,qmi-board-id=255"],
				"data": "bus=pci,qmi-chip-id=0,qmi-board-id=255.bin"
			}
		]
	}
]

Depends: openwrt/openwrt#21767