Thank you @igorpadykov for the reply,
Currently, the sources are
driver/bluetooth/btmrvl_sdio.c - for marvell sdio interface (support: SD8688/SD8787/SD8797/SD8887/SD8897/SD8977/SD8987/SD8997)
driver/bluetooth/hci_mrvl.c - for marvel uart interface (88w8897)
Shall I use the same driver (hci_mrvl.c) for 8987 .
Regards,
Vinothkumar Sekar