kconfig/conf: accept a base-16 seed for randconfig

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index bde5b95..94521c7 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -527,7 +527,7 @@
 			seed_env = getenv("KCONFIG_SEED");
 			if( seed_env && *seed_env ) {
 				char *endp;
-				int tmp = (int)strtol(seed_env, &endp, 10);
+				int tmp = (int)strtol(seed_env, &endp, 0);
 				if (*endp == '\0') {
 					seed = tmp;
 				}