Revert "Bluetooth: h5: Fix missing dependency on BT_HCIUART_SERDEV"

This reverts commit b5c98d8c which is
commit 6c3711ec upstream.

You Ling writes that this config option isn't even in 4.9.y yet, so it
causes a regression.  Revert the patch because of this.
Reported-by: youling 257 <youling257@gmail.com>
Cc: Johan Hedberg <johan.hedberg@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/bluetooth/Kconfig

@@ -125,7 +125,6 @@ config BT_HCIUART_LL
 config BT_HCIUART_3WIRE
 	bool "Three-wire UART (H5) protocol support"
 	depends on BT_HCIUART
-	depends on BT_HCIUART_SERDEV
 	help
 	  The HCI Three-wire UART Transport Layer makes it possible to
 	  user the Bluetooth HCI over a serial port interface. The HCI