ARM: m53evk: Enable CONFIG_REGEX

Enable CONFIG_REGEX on M53EVK to allow usage of regular expressions
on environment variables.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>

include/configs/m53evk.h

@@ -39,6 +39,8 @@
 #define CONFIG_CMD_USB
 #define CONFIG_VIDEO
 
+#define CONFIG_REGEX			/* Enable regular expression support */
+
 /*
  * Memory configurations
  */