qca6574: add Bluetooth firmware files from r10005.1 tag

Up to now, the ConnectCore 8X was using the Bluetooth firmware
files from model QCA6564 r110059.1.
This commit adds the firmware files from repo 'qca6574au-le-2-2-1_qca_oem'
at tag r10005.1:

  nvm_tlv_3.2.bin: 3de46ea023570b86cabb9502b92a1fed
   based on MD5SUM a97cdfe80e8109cf3574f74cd3c73fc7 but changed
   byte 0x36 (decimal 54) to 0x02 (IBS)

  rampatch_tlv_3.2.tlv: e8cdb0260615e02bd21c3b3fcaf832eb

The recipe has changed to use the variable QCA_MODEL and each firmware
has moved to a folder of its own.

While on it, remove old Bluetooth firmware files 3.0 which were
not used.

Signed-off-by: Hector Palacios <hector.palacios@digi.com>

https://jira.digi.com/browse/DEL-6218

meta-digi-arm/recipes-bsp/firmware-qualcomm/firmware-qualcomm.bb

@@ -8,11 +8,10 @@ LIC_FILES_CHKSUM = "file://${DIGI_EULA_FILE};md5=8c0ad592dd48ace3d25eed5bbb26ba7
 # Selects whether to use proprietary or community driver
 QUALCOMM_WIFI_DRIVER ?= "proprietary"
 
+# Bluetooth firmware files
 FW_QUALCOMM_BT = " \
-    file://qca/nvm_tlv_3.0.bin \
+    file://${QCA_MODEL}_bt/nvm_tlv_3.2.bin \
-    file://qca/nvm_tlv_3.2.bin \
+    file://${QCA_MODEL}_bt/rampatch_tlv_3.2.tlv \
-    file://qca/rampatch_tlv_3.0.tlv \
-    file://qca/rampatch_tlv_3.2.tlv \
 "
 
 # Firmware files for QCA6564 (Qualcomm proprietary driver)