h2200: Disable SHA256 on FIT images

This board is close in binary size to one of its hard limits, so disable
SHA256 FIT image support to gain some breathing room.

Signed-off-by: Tom Rini <trini@ti.com>

include/configs/h2200.h

@@ -123,6 +123,7 @@
 #define CONFIG_CMD_IMI
 
 #define CONFIG_FIT
+#define CONFIG_FIT_DISABLE_SHA256
 #define CONFIG_SETUP_MEMORY_TAGS
 #define CONFIG_CMDLINE_TAG
 #define CONFIG_INITRD_TAG