usb: Drop use of BUG_ON() and WARN_ON()

These macros use __FILE__ which inserts the full path of the object file
into U-Boot, thus increasing file size. Drop these usages.

An older version of this patch was submitted here:

http://patchwork.ozlabs.org/patch/1205784/

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index c98a444..4a6f427 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1003,7 +1003,11 @@
 	 * so there's no i/o concurrency that could affect the
 	 * state protected by cdev->lock.
 	 */
+#ifdef __UBOOT__
+	assert_noisy(!cdev->config);
+#else
 	BUG_ON(cdev->config);
+#endif
 
 	while (!list_empty(&cdev->configs)) {
 		c = list_first_entry(&cdev->configs,
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 45c7b58..c1e6506 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -390,7 +390,11 @@
 	if (common->fsg)
 		return 1;
 	ERROR(common, "common->fsg is NULL in %s at %u\n", func, line);
+#ifdef __UBOOT__
+	assert_noisy(false);
+#else
 	WARN_ON(1);
+#endif
 	return 0;
 }
 
diff --git a/drivers/usb/musb-new/musb_core.c b/drivers/usb/musb-new/musb_core.c
index afea9fb..ab5e3aa 100644
--- a/drivers/usb/musb-new/musb_core.c
+++ b/drivers/usb/musb-new/musb_core.c
@@ -1859,7 +1859,11 @@
 	musb->ctrl_base = mbase;
 	musb->nIrq = -ENODEV;
 	musb->config = config;
+#ifdef __UBOOT__
+	assert_noisy(musb->config->num_eps <= MUSB_C_NUM_EPS);
+#else
 	BUG_ON(musb->config->num_eps > MUSB_C_NUM_EPS);
+#endif
 	for (epnum = 0, ep = musb->endpoints;
 			epnum < musb->config->num_eps;
 			epnum++, ep++) {
diff --git a/drivers/usb/musb-new/musb_gadget_ep0.c b/drivers/usb/musb-new/musb_gadget_ep0.c
index 9835a2e..3ef8fe1 100644
--- a/drivers/usb/musb-new/musb_gadget_ep0.c
+++ b/drivers/usb/musb-new/musb_gadget_ep0.c
@@ -882,7 +882,7 @@
 
 	default:
 		/* "can't happen" */
-		WARN_ON(1);
+		assert_noisy(false);
 		musb_writew(regs, MUSB_CSR0, MUSB_CSR0_P_SENDSTALL);
 		musb->ep0_state = MUSB_EP0_STAGE_IDLE;
 		break;