QCA: Add Bluetooth firmware for QCA6390

This commit will add required Bluetooth firmware files for QCA6390.

htbtfw20.tlv : RAM FW dump
htnv20.bin : NVM dump.
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>

WHENCE

@@ -3852,6 +3852,8 @@ File: qca/rampatch_00440302.bin
 File: qca/nvm_00440302_eu.bin
 File: qca/nvm_00440302_i2s_eu.bin
 File: qca/nvm_usb_00000302_eu.bin
+File: qca/htbtfw20.tlv
+File: qca/htnv20.bin
 
 Licence: Redistributable. See LICENSE.QualcommAtheros_ath10k and qca/NOTICE.txt for details