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_msm.c b/drivers/usb/chipidea/ci13xxx_msm.c
index 418de0e..2742793 100644
--- a/drivers/usb/chipidea/ci13xxx_msm.c
+++ b/drivers/usb/chipidea/ci13xxx_msm.c
@@ -11,8 +11,9 @@
 #include <linux/usb/msm_hsusb_hw.h>
 #include <linux/usb/ulpi.h>
 #include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
 
-#include "ci13xxx_udc.h"
+#include "ci.h"
 
 #define MSM_USB_BASE	(udc->regs)