apalis/colibri_t20/t30: increase tftp blocksize

Enable CONFIG_IP_DEFRAG and set CONFIG_TFTP_BLOCKSIZE to 16384.
This increases the tftp download speed considerably.

While at it enable CONFIG_TFTP_TSIZE which limits the progress bar to
fifty '#' independent of the downloaded file size.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/configs/colibri_t20.h b/include/configs/colibri_t20.h
index 15bb7b2..09a65d5 100644
--- a/include/configs/colibri_t20.h
+++ b/include/configs/colibri_t20.h
@@ -46,6 +46,9 @@
 
 /* General networking support */
 #define CONFIG_CMD_DHCP
+#define CONFIG_IP_DEFRAG
+#define CONFIG_TFTP_BLOCKSIZE		1536
+#define CONFIG_TFTP_TSIZE
 
 /* LCD support */
 #define CONFIG_LCD