Bluetooth: add support for 2011 mac mini

Today I noticed that the usb bluetooth adapter (BCM2046B1) on my 2011
mac mini was not working. I've created a patch to get it going.

Signed-off-by: Jurgen Kramer <gtmkramer@xs4all.nl>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 60c748a..9cbac6b 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -78,6 +78,9 @@
 	/* Apple MacBookPro8,2 */
 	{ USB_DEVICE(0x05ac, 0x821a) },
 
+	/* Apple MacMini5,1 */
+	{ USB_DEVICE(0x05ac, 0x8281) },
+
 	/* AVM BlueFRITZ! USB v2.0 */
 	{ USB_DEVICE(0x057c, 0x3800) },