icdi: add TI icdi interface

This is the new proprietary interface replacing the older FTDI based adapters.
It is currently fitted to the ek-lm4f232 and Stellaris LaunchPad.

Change-Id: I794ad79e31ff61ec8e9f49530aca9308025c0b60
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/922
Tested-by: jenkins

src/jtag/hla/hla_layout.c

@@ -71,6 +71,12 @@ static const struct hl_layout hl_layouts[] = {
 	 .close = hl_layout_close,
 	 .api = &stlink_usb_layout_api,
 	 },
+	{
+	 .name = "ti-icdi",
+	 .open = hl_layout_open,
+	 .close = hl_layout_close,
+	 .api = &icdi_usb_layout_api,
+	},
 	{.name = NULL, /* END OF TABLE */ },
 };
 

src/jtag/hla/hla_layout.h

@@ -30,6 +30,7 @@ struct hl_interface_param_s;
 
 /** */
 extern struct hl_layout_api_s stlink_usb_layout_api;
+extern struct hl_layout_api_s icdi_usb_layout_api;
 
 /** */
 struct hl_layout_api_s {