orangepi5-ultra: enable Bluetooth on edge kernel via hci_bcm (#9697)

Here is the same patch with commit 76fc84a，because Orangepi 5 Ultra share the same AP6611s module with Orangepi 5 Max. Tested on the Ultra board, bluetooth just works with kernel 7.0.0

Author: pdapandapda

config/boards/orangepi5-ultra.csc

@@ -44,7 +44,23 @@ function post_family_tweaks_bsp__orangepi5ultra_bluetooth() {
 }
 
 function post_family_tweaks__orangepi5ultra_enable_bluetooth_service() {
+	# On the edge kernel, the mainline hci_bcm SerDev driver handles BT natively
+	# via the DT bluetooth node. The user-space patchram service would conflict
+	# with SerDev (both try to claim /dev/ttyS7), so we skip enabling it.
+	[[ "$BRANCH" == "edge" ]] && return 0
+
 	display_alert "$BOARD" "Enabling ap6611s-bluetooth.service" "info"
 	chroot_sdcard systemctl enable ap6611s-bluetooth.service
 	return 0
 }
+
+# On the edge kernel, hci_bcm constructs the firmware filename from the board
+# compatible string (BCM.<board>.hcd), not from the chip name. Create a symlink
+# so the driver finds the SYN43711A0 patchram firmware.
+function post_family_tweaks__orangepi5ultra_bt_firmware_symlink() {
+	[[ "$BRANCH" != "edge" ]] && return 0
+	display_alert "$BOARD" "Creating BT firmware symlink for edge kernel" "info"
+	mkdir -p "$SDCARD/lib/firmware/brcm"
+	ln -sf SYN43711A0.hcd "$SDCARD/lib/firmware/brcm/BCM.xunlong,orangepi-5-ultra.hcd"
+	return 0
+}