omap3: cm-t3517: change environment size

Mainline CM-T3517 U-Boot environment size differs from that one
shipped with CM-T3517 boards.

Update environment size, to avoid backward compatibility issues.

Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>

include/configs/cm_t3517.h

@@ -66,7 +66,7 @@
 /*
  * Size of malloc() pool
  */
-#define CONFIG_ENV_SIZE		(16 << 10)	/* 16 KiB */
+#define CONFIG_ENV_SIZE		(128 << 10)	/* 128 KiB */
 #define CONFIG_SYS_MALLOC_LEN	(CONFIG_ENV_SIZE + (128 << 10))
 
 /*