rtl_bt: Update RTL8852A BT USB firmware to 0xDBB7_C1D9

This firmware patch update for Realtek RTL8852A BT USB controller.

Release Version: 0xDBB7_C1D9

Signed-off-by: Hilda Wu <hildawu@realtek.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>