make sm502 init nb serial and ignore some check error of usb_storage.

Targets/Bonito2fdev/Bonito/start_sm502.S

@@ -1280,13 +1280,11 @@ LEAF(initserial)
 	.set noat
 	move AT,ra
 
-
-#ifdef HAVE_NB_SERIAL
 	la	v0, COM3_BASE_ADDR
  	li	a0, NS16550HZ/(16*CONS_BAUD)
 	bal 1f
 	nop
-#else
+#ifndef HAVE_NB_SERIAL
 #define	SM502_ADDR  0xb6030000
 #define	NSREG(x)    (x*4)
 #define	SM502_UART_FRE	96000000

sys/dev/usb/usb_storage.c

@@ -1157,7 +1157,7 @@ int usb_storage_probe(struct usb_device *dev, unsigned int ifnum,struct us_data
 	    !ss->ep_in || !ss->ep_out ||
 	    (ss->protocol == US_PR_CBI && ss->ep_int == 0)) {
 		USB_STOR_PRINTF("Problems with device\n");
-		return 0;
+		//return 0;
 	}
 	/* set class specific stuff */
 	/* We only handle certain protocols.  Currently, these are