brcm: Add brcmfmac43430-sdio.xxx.txt nvram for the Chuwi Hi8 (CWI509) tablet Add a NVRAM file for the brcmfmac43430[a1] wifi/bt chip found on some versions of the Chuw Hi8 (CWI509) tablet. This is based on copy of the existing brcmfmac43430-sdio.Hampoo-D2D3_Vi8A1.txt NVRAM file with some the calibration values adjusted for the Chuwi Hi8 tablet. Signed-off-by: Hans de Goede <hdegoede@redhat.com>