arm: mx5: Enable NAND TrimFFS on M53EVK

Enable NAND TrimFFS support in M53EVK, since it is convenient when
installing UBI images to NAND.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/include/configs/m53evk.h b/include/configs/m53evk.h
index 1efe48c..dc85768 100644
--- a/include/configs/m53evk.h
+++ b/include/configs/m53evk.h
@@ -41,6 +41,7 @@
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_MMC
 #define CONFIG_CMD_NAND
+#define CONFIG_CMD_NAND_TRIMFFS
 #define CONFIG_CMD_PING
 #define CONFIG_CMD_SATA
 #define CONFIG_CMD_USB