[U-Boot] [PATCH] net: make net_rand.h inclusion depend on BOOTP_RANDOM_DELAY

[Kim Phillips]

commit "net: use common rand()/srand() functions" introduced the following
build warning on the current u-boot-arm tree:

$ ./MAKEALL MPC8313ERDB_66
Configuring for MPC8313ERDB_66 - Board: MPC8313ERDB, Options: SYS_66MHZ
   text	   data	    bss	    dec	    hex	filename
 271988	  13976	  41768	 327732	  50034	./u-boot
In file included from bootp.c:15:0:
net_rand.h: In function 'srand_mac':
net_rand.h:40:2: warning: implicit declaration of function 'srand' [-Wimplicit-function-declaration]

adding this dependency fixes it.

Cc: Michael Walle <michael at walle.cc>
Cc: Joe Hershberger <joe.hershberger at ni.com>
Signed-off-by: Kim Phillips <kim.phillips at freescale.com>
---
 net/bootp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bootp.c b/net/bootp.c
index 0f0867b..87e30ab 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -12,12 +12,14 @@
 #include <command.h>
 #include <net.h>
 #include "bootp.h"
-#include "net_rand.h"
 #include "tftp.h"
 #include "nfs.h"
 #ifdef CONFIG_STATUS_LED
 #include <status_led.h>
 #endif
+#ifdef CONFIG_BOOTP_RANDOM_DELAY
+#include "net_rand.h"
+#endif
 
 #define BOOTP_VENDOR_MAGIC	0x63825363	/* RFC1048 Magic Cookie */
 
-- 
1.7.11.1