Firmware version for these images is 16.68.1.p70

PCIe-USB and PCIe-UART are two variant of PCIe8997 chipset in which WLAN
is over PCIe whereas bluetooth can be over USB or UART bus.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>