rename CFG_ENV_IS_IN_EEPROM in CONFIG_ENV_IS_IN_EEPROM

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c
index 43d8be8..0b8e664 100644
--- a/lib_blackfin/board.c
+++ b/lib_blackfin/board.c
@@ -378,7 +378,7 @@
 	malloc_bin_reloc();
 
 #ifdef CONFIG_SPI
-# if ! defined(CFG_ENV_IS_IN_EEPROM)
+# if ! defined(CONFIG_ENV_IS_IN_EEPROM)
 	spi_init_f();
 # endif
 	spi_init_r();