firmware-utils/mktplinkfw: fix hardware id of the TL-WR740 v3

SVN-Revision: 28602

tools/firmware-utils/src/mktplinkfw.c

@@ -40,7 +40,7 @@
 #define HWID_TL_WR703N_V1	0x07030101
 #define HWID_TL_WR741ND_V1	0x07410001
 #define HWID_TL_WR740N_V1	0x07400001
-#define HWID_TL_WR740N_V3	0x07400300
+#define HWID_TL_WR740N_V3	0x07400003
 #define HWID_TL_WR743ND_V1	0x07430001
 #define HWID_TL_WR841N_V1_5	0x08410002
 #define HWID_TL_WR841ND_V3	0x08410003