arm: atmel: sama5d3: fix typo error for CONFIG_ENV_IS_NOWHERE

fix typo error for CONFIG_ENV_IS_NOWHERE from CONIG_ENV_IS_NOWHERE

Signed-off-by: Bo Shen <voice.shen@gmail.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

include/configs/sama5d3xek.h

@@ -197,7 +197,7 @@
 				"bootm 0x22000000 - 0x21000000"
 #define CONFIG_SYS_MMC_ENV_DEV	0
 #else
-#define CONIG_ENV_IS_NOWHERE
+#define CONFIG_ENV_IS_NOWHERE
 #endif
 
 #ifdef CONFIG_SYS_USE_MMC