usb, davinci: add enable_vbus() weak function

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Remy Bohmer <linux@bohmer.net>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

drivers/usb/musb/davinci.c

diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index f56f2df..c94a762 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -78,6 +78,17 @@
 	writel(USBPHY_OSCPDWN | USBPHY_PHYPDWN, USBPHY_CTL_PADDR);
 }
 
+void __enable_vbus(void)
+{
+	/*
+	 *  nothing to do, vbus is handled through the cpu.
+	 *  Define this function in board code, if it is
+	 *  different on your board.
+	 */
+}
+void  enable_vbus(void)
+	__attribute__((weak, alias("__enable_vbus")));
+
 /*
  * This function performs Davinci platform specific initialization for usb0.
  */
@@ -86,9 +97,8 @@
 	u32  revision;
 
 	/* enable USB VBUS */
-#ifndef DAVINCI_DM365EVM
 	enable_vbus();
-#endif
+
 	/* start the on-chip USB phy and its pll */
 	if (!phy_on())
 		return -1;