ti_armv7_common: env: Increase IO buffer size

There are certain environment variables whose length is greater than
the defined IO buffer size. So, increase the IO buffer size to print the
entire variables.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/configs/ti_armv7_common.h

@@ -199,7 +199,7 @@
 #define CONFIG_SYS_MAXARGS		64
 
 /* Console I/O Buffer Size */
-#define CONFIG_SYS_CBSIZE		512
+#define CONFIG_SYS_CBSIZE		1024
 /* Print Buffer Size */
 #define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE \
 					+ sizeof(CONFIG_SYS_PROMPT) + 16)