[Bluetooth] Add generic driver for Bluetooth SDIO devices

This patch adds a generic driver for Bluetooth SDIO devices. It
supports Type-A and Type-B devices.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 62b89b9..77bded4 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -22,6 +22,17 @@
 
 	  Say Y here to compile support for SCO over HCI USB.
 
+config BT_HCIBTSDIO
+	tristate "HCI SDIO driver"
+	depends on MMC
+	help
+	  Bluetooth HCI SDIO driver.
+	  This driver is required if you want to use Bluetooth device with
+	  SDIO interface.
+
+	  Say Y here to compile support for Bluetooth SDIO devices into the
+	  kernel or say M to compile it as module (btsdio).
+
 config BT_HCIUART
 	tristate "HCI UART driver"
 	help