usb: chipidea: split the driver code into units

Split the driver into the following parts:
  * core  -- resources, register access, capabilities, etc;
  * udc   -- device controller functionality;
  * debug -- logging events.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/chipidea/ci13xxx_pci.c b/drivers/usb/chipidea/ci13xxx_pci.c
index f075ef3..84e8ab8 100644
--- a/drivers/usb/chipidea/ci13xxx_pci.c
+++ b/drivers/usb/chipidea/ci13xxx_pci.c
@@ -15,8 +15,7 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/usb/gadget.h>
-
-#include "ci13xxx_udc.h"
+#include <linux/usb/chipidea.h>
 
 /* driver name */
 #define UDC_DRIVER_NAME   "ci13xxx_pci"