gen_eth_addr: Use POSIX rand() and srand()

Replace random()/srandom() use with rand()/srand() to support
compilation with the mingw toolchain.  The rand()/srand() functions are
generally more common and are functionally equivalent to the original
random()/srandom() calls.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

tools/gen_eth_addr.c

@@ -31,15 +31,15 @@ main(int argc, char *argv[])
 {
     unsigned long ethaddr_low, ethaddr_high;
 
-    srandom(time(0) | getpid());
+    srand(time(0) | getpid());
 
     /*
      * setting the 2nd LSB in the most significant byte of
      * the address makes it a locally administered ethernet
      * address
      */
-    ethaddr_high = (random() & 0xfeff) | 0x0200;
-    ethaddr_low = random();
+    ethaddr_high = (rand() & 0xfeff) | 0x0200;
+    ethaddr_low = rand();
 
     printf("%02lx:%02lx:%02lx:%02lx:%02lx:%02lx\n",
 	ethaddr_high >> 8, ethaddr_high & 0xff,