QCA: Add Bluetooth firmware for QCA2066

 This commit will add required Bluetooth firmware files for QCA2066.
 The image version is 2.1.0-00538.

hpbtfw21.tlv : RAM FW dump
hpnv21.bin : NVM dump.
hpnv21g.bin : NVM dump.
hpnv21.301 : NVM dump.
hpnv21.302 : NVM dump.
hpnv21g.301 : NVM dump.
hpnv21g.302 : NVM dump.

Signed-off-by: Tim Jiang <quic_tjiang@quicinc.com>