[U-Boot] [UBOOT RFC PATCH 11/13] commom: usb: implement "__weak" functions to make compiler happy

[Kishon Vijay Abraham I]

Implemented __weak functions for board_usb_cleanup,
board_usb_gadget_handle_interrupts and usb_gadget_handle_interrupts
to get of compiler errors in platforms that haven't implemented
these functions.

Signed-off-by: Kishon Vijay Abraham I <kishon at ti.com>
---
 common/usb.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/common/usb.c b/common/usb.c
index 60daa10..892bf7c 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -1072,4 +1072,22 @@ int board_usb_init(int index, enum usb_init_type init)
 {
 	return 0;
 }
+
+__weak
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return 0;
+}
+
+__weak
+int board_usb_gadget_handle_interrupts(int index)
+{
+	return 0;
+}
+
+__weak
+int usb_gadget_handle_interrupts(void)
+{
+	return 0;
+}
 /* EOF */
-- 
1.9.1