usb: host: xhci-omap: fix double weak board_usb_init functions

A weak version of the function board_usb_init is implemented in:
common/usb.c
drivers/usb/host/xhci-omap.c

To fix the double implementations:
* Convert the board_usb_init function in drivers/usb/host/xhci-omap.c
  normal (not weak).
* The function board_usb_init in drivers/usb/host/xhci-omap.c calls to
  the weak function omap_xhci_board_usb_init.
* Rename board version of the function board_usb_init to
  omap_xhci_board_usb_init.
  Done only for boards that defines CONFIG_USB_XHCI_OMAP.

To achieve the same flexibility with the function board_usb_cleanup:
* Add a normal (not weak) implementation of the function
  board_usb_cleanup in drivers/usb/host/xhci-omap.c
* The function board_usb_cleanup in drivers/usb/host/xhci-omap.c calls
  to the weak function omap_xhci_board_usb_cleanup.
* Rename board version of the function board_usb_cleanup to
  omap_xhci_board_usb_cleanup.
  Done only for boards that defines CONFIG_USB_XHCI_OMAP.

Cc: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Uri Mashiach <uri.mashiach@compulab.co.il>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>

board/compulab/cl-som-am57x/cl-som-am57x.c

@@ -54,7 +54,7 @@ int board_mmc_init(bd_t *bis)
 #endif /* CONFIG_GENERIC_MMC */
 
 #ifdef CONFIG_USB_XHCI_OMAP
-int board_usb_init(int index, enum usb_init_type init)
+int omap_xhci_board_usb_init(int index, enum usb_init_type init)
 {
 	setbits_le32((*prcm)->cm_l3init_usb_otg_ss1_clkctrl,
 		     OTG_SS_CLKCTRL_MODULEMODE_HW | OPTFCLKEN_REFCLK960M);

board/ti/am43xx/board.c

@@ -694,7 +694,7 @@ int usb_gadget_handle_interrupts(int index)
 #endif /* CONFIG_USB_DWC3 */
 
 #if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_OMAP)
-int board_usb_init(int index, enum usb_init_type init)
+int omap_xhci_board_usb_init(int index, enum usb_init_type init)
 {
 	enable_usb_clocks(index);
 #ifdef CONFIG_USB_DWC3
@@ -725,7 +725,7 @@ int board_usb_init(int index, enum usb_init_type init)
 	return 0;
 }
 
-int board_usb_cleanup(int index, enum usb_init_type init)
+int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
 {
 #ifdef CONFIG_USB_DWC3
 	switch (index) {

board/ti/am57xx/board.c

@@ -720,7 +720,7 @@ int usb_gadget_handle_interrupts(int index)
 #endif /* CONFIG_USB_DWC3 */
 
 #if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_OMAP)
-int board_usb_init(int index, enum usb_init_type init)
+int omap_xhci_board_usb_init(int index, enum usb_init_type init)
 {
 	enable_usb_clocks(index);
 	switch (index) {
@@ -754,7 +754,7 @@ int board_usb_init(int index, enum usb_init_type init)
 	return 0;
 }
 
-int board_usb_cleanup(int index, enum usb_init_type init)
+int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
 {
 #ifdef CONFIG_USB_DWC3
 	switch (index) {

board/ti/dra7xx/evm.c

@@ -750,7 +750,7 @@ static struct ti_usb_phy_device usb_phy2_device = {
 	.index = 1,
 };
 
-int board_usb_init(int index, enum usb_init_type init)
+int omap_xhci_board_usb_init(int index, enum usb_init_type init)
 {
 	enable_usb_clocks(index);
 	switch (index) {
@@ -787,7 +787,7 @@ int board_usb_init(int index, enum usb_init_type init)
 	return 0;
 }
 
-int board_usb_cleanup(int index, enum usb_init_type init)
+int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
 {
 	switch (index) {
 	case 0:

drivers/usb/host/xhci-omap.c

@@ -27,12 +27,25 @@ DECLARE_GLOBAL_DATA_PTR;
 
 static struct omap_xhci omap;
 
-__weak int __board_usb_init(int index, enum usb_init_type init)
+__weak int omap_xhci_board_usb_init(int index, enum usb_init_type init)
 {
 	return 0;
 }
+
 int board_usb_init(int index, enum usb_init_type init)
-	__attribute__((weak, alias("__board_usb_init")));
+{
+	return omap_xhci_board_usb_init(index, init);
+}
+
+__weak int omap_xhci_board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return 0;
+}
+
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return omap_xhci_board_usb_cleanup(index, init);
+}
 
 static int omap_xhci_core_init(struct omap_xhci *omap)
 {