usb: replace wait_ms() with mdelay()

Common code has a mdelay() func, so use that instead of the usb-specific
wait_ms() func.  This also fixes the build errors:

ohci-hcd.c: In function 'submit_common_msg':
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1519:9: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1816:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1827:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1844:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1563:11: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1583:9: sorry, unimplemented: called from here
make[1]: *** [ohci-hcd.o] Error 1

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Marek Vasut <marex@denx.de>
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index abdcbb4..5ef34c3 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -578,7 +578,7 @@
 			/* When root hub or any of its ports is going
 			   to come out of suspend, it may take more
 			   than 10ms for status bits to stabilize. */
-			wait_ms(20);
+			mdelay(20);
 		}
 
 		if (intstat & HCINT_SO) {
@@ -679,7 +679,7 @@
 	/* Pack data into FIFO ram */
 	pack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
 #ifdef EXTRA_DELAY
-	wait_ms(EXTRA_DELAY);
+	mdelay(EXTRA_DELAY);
 #endif
 
 	/* Start the data transfer */
@@ -983,11 +983,11 @@
 						       HCRHPORT1 + wIndex - 1);
 				if (!(tmp & RH_PS_PRS))
 					break;
-				wait_ms(1);
+				mdelay(1);
 			}
 			isp116x_write_reg32(isp116x, HCRHPORT1 + wIndex - 1,
 					    RH_PS_PRS);
-			wait_ms(10);
+			mdelay(10);
 
 			len = 0;
 			break;
@@ -1251,7 +1251,7 @@
 	isp116x_write_reg32(isp116x, HCCMDSTAT, HCCMDSTAT_HCR);
 	while (--retries) {
 		/* It usually resets within 1 ms */
-		wait_ms(1);
+		mdelay(1);
 		if (!(isp116x_read_reg32(isp116x, HCCMDSTAT) & HCCMDSTAT_HCR))
 			break;
 	}
@@ -1278,7 +1278,7 @@
 		clkrdy = isp116x_read_reg16(isp116x, HCuPINT) & HCuPINT_CLKRDY;
 		if (clkrdy)
 			break;
-		wait_ms(1);
+		mdelay(1);
 	}
 	if (!clkrdy) {
 		ERR("clock not ready after %dms", timeout);