SD8897:
    WLAN (SDIO) firmware version: 15.68.7.p18
    Bluetooth (SDIO) firmware version: 15.68.7.p18
    The combo image can be downloaded through either WLAN or
    Bluetooth.

PCIe/USB-8897:
    WLAN (PCIe) firmware version: 15.68.7.p18
    Bluetooth (USB) firmware version: 15.68.7.p18
    The combo image will be downloaded through WLAN only.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>