bluez: Add support for Raspberry Pi 3

- Adds bcm43xx-3wire variant.
- Resets UART speed after firmware download.
- Prints chip name when firmware isn't found for bcm43xx.
- Increases timeout for bcm43xx.
- Moves bcm43xx firmware to lib.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

utils/bluez/patches/001-bcm43xx-Add-bcm43xx-3wire-variant.patch

@@ -0,0 +1,21 @@
+From b4f2b77472aeb967d3a7595e8a965785c7a37c87 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 16 Feb 2016 16:40:46 +0000
+Subject: [PATCH 1/4] bcm43xx: Add bcm43xx-3wire variant
+
+---
+ tools/hciattach.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/tools/hciattach.c
++++ b/tools/hciattach.c
+@@ -1144,6 +1144,9 @@ struct uart_t uart[] = {
+ 	{ "bcm43xx",    0x0000, 0x0000, HCI_UART_H4,   115200, 3000000,
+ 				FLOW_CTL, DISABLE_PM, NULL, bcm43xx, NULL  },
+ 
++	{ "bcm43xx-3wire",    0x0000, 0x0000, HCI_UART_3WIRE, 115200, 3000000,
++				0, DISABLE_PM, NULL, bcm43xx, NULL  },
++
+ 	{ "ath3k",    0x0000, 0x0000, HCI_UART_ATH3K, 115200, 115200,
+ 			FLOW_CTL, DISABLE_PM, NULL, ath3k_ps, ath3k_pm  },
+