tools: kwbimage: Change maximum number of arguments in binary header to 256

The number is stored in one byte, so the maximum should be 255.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/tools/kwbimage.c b/tools/kwbimage.c
index 76c2562..2d4574a 100644
--- a/tools/kwbimage.c
+++ b/tools/kwbimage.c
@@ -89,7 +89,7 @@
 /* Used to identify an undefined execution or destination address */
 #define ADDR_INVALID ((uint32_t)-1)
 
-#define BINARY_MAX_ARGS 8
+#define BINARY_MAX_ARGS 255
 
 /* In-memory representation of a line of the configuration file */