Name remainder of BFU usb commands used.

driver-bitfury.c

@@ -23,7 +23,7 @@ static void bitfury_empty_buffer(struct cgpu_info *bitfury)
 	int amount;
 
 	do {
-		usb_read(bitfury, buf, 512, &amount, C_PING);
+		usb_read(bitfury, buf, 512, &amount, C_BF1_FLUSH);
 	} while (amount);
 }
 
@@ -48,7 +48,7 @@ static void bitfury_identify(struct cgpu_info *bitfury)
 {
 	int amount;
 
-	usb_write(bitfury, "L", 1, &amount, C_PING);
+	usb_write(bitfury, "L", 1, &amount, C_BF1_IDENTIFY);
 }
 
 static bool bitfury_getinfo(struct cgpu_info *bitfury, struct bitfury_info *info)

usbutils.h

@@ -333,7 +333,9 @@ struct cg_usb_info {
 	USB_ADD_COMMAND(C_BF1_GETRESET, "BF1GetReset") \
 	USB_ADD_COMMAND(C_BF1_REQWORK, "BF1RequestWork") \
 	USB_ADD_COMMAND(C_BF1_GETWORK, "BF1GetWork") \
-	USB_ADD_COMMAND(C_BF1_GETRES, "BF1GetResults")
+	USB_ADD_COMMAND(C_BF1_GETRES, "BF1GetResults") \
+	USB_ADD_COMMAND(C_BF1_FLUSH, "BF1Flush") \
+	USB_ADD_COMMAND(C_BF1_IDENTIFY, "BF1Identify")
 
 /* Create usb_cmds enum from USB_PARSE_COMMANDS macro */
 #define USB_ADD_COMMAND(X, Y) X,