Revert "ccimx8x: bluetooth-init: set 115200bps for SOMv1"

SOM v1 is not going to be released, so there's no need for a revision check.
Now that hw flow control is available, use it along with the highest baudrate
possible.

This reverts commit e4fbba3dde.

https://jira.digi.com/browse/DEL-6254

meta-digi-dey/recipes-connectivity/bluez/bluez5-5.46/ccimx8x/bluetooth-init

@@ -46,21 +46,6 @@ bluetooth_init() {
 		BT_MACADDR="00:04:F3:FF:FF:BB"
 	fi
 
-	# Module version older than revision 2 has swapped CTS and RTS lines
-	MOD_VERSION="$(($(cat /proc/device-tree/digi,hwid,hv 2>/dev/null | tr -d '\0' || true)))"
-	if [ "${MOD_VERSION}" -lt "2" ]; then
-		# Reduce the rate to avoid the need for HW flow control
-		BT_RATE="115200"
-		BT_RATE_CODE="00" # 115200 bps
-		BT_FLOW="noflow"
-
-		# Modify the baudrate in the firmware file
-		BT_FW_FILE="/lib/firmware/qca/nvm_tlv_3.2.bin"
-		if [ "$(hexdump -s 56 -n 1 -ve '1/1 "%.2x"' ${BT_FW_FILE})" != "${BT_RATE_CODE}" ]; then
-			printf "\x${BT_RATE_CODE}" | dd of="${BT_FW_FILE}" bs=1 seek=56 count=1 conv=notrunc,fsync 2>/dev/null
-		fi
-	fi
-
 	# Start the Bluetooth driver and bring up the interface
 	HCIATTACH_LOG="/var/log/hciattach.log"