configs: ae350: Increase maximum retry count for AE350 platforms

Loading an image via TFTP is often interrupted when retrying more than
10 times, increase the number of retries so that it does not simply stop
the transfer.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
diff --git a/configs/ae350_rv64_spl_defconfig b/configs/ae350_rv64_spl_defconfig
index 51d23d0..9664baf 100644
--- a/configs/ae350_rv64_spl_defconfig
+++ b/configs/ae350_rv64_spl_defconfig
@@ -34,6 +34,7 @@
 CONFIG_CMD_CACHE=y
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_NET_RETRY_COUNT=50
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_MMC=y