usb: dwc3: fix sparse errors

sparse caught three mistakes on this driver,
fix them:

drivers/usb/dwc3/ep0.c:806:29: warning: duplicate const
drivers/usb/dwc3/debugfs.c:481:15: warning: symbol 'dwc3_debugfs_init' \
	was not declared. Should it be static?
drivers/usb/dwc3/debugfs.c:518:16: warning: symbol 'dwc3_debugfs_exit' \
	was not declared. Should it be static?

Signed-off-by: Felipe Balbi <balbi@ti.com>

2 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c
index e78abb438b4b..87d403df1f3f 100644
--- a/drivers/usb/dwc3/debugfs.c
+++ b/drivers/usb/dwc3/debugfs.c
@@ -49,6 +49,7 @@
 #include "core.h"
 #include "gadget.h"
 #include "io.h"
+#include "debug.h"
 
 struct dwc3_register {
         const char      *name;
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 861a41aa87d2..86d7b6de68f9 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -803,7 +803,7 @@ static void dwc3_ep0_xfernotready(struct dwc3 *dwc,
 }
 
 void dwc3_ep0_interrupt(struct dwc3 *dwc,
-                const const struct dwc3_event_depevt *event)
+                const struct dwc3_event_depevt *event)
 {
         u8                      epnum = event->endpoint_number;