ppc4xx: Enable commands for FDT enabled Linux booting on AMCC Acadia

Acadia still used the "old" arch/ppc bootm commands for booting
Linux images without FDT. This patch now enables these fdt-aware
boot commands for Acadia as well.
Signed-off-by: NStefan Roese <sr@denx.de>

include/configs/acadia.h

@@ -225,7 +225,8 @@
  */
 #define	CONFIG_EXTRA_ENV_SETTINGS					\
 	CONFIG_AMCC_DEF_ENV						\
-	CONFIG_AMCC_DEF_ENV_PPC						\
+	CONFIG_AMCC_DEF_ENV_POWERPC					\
+	CONFIG_AMCC_DEF_ENV_PPC_OLD					\
 	CONFIG_AMCC_DEF_ENV_NOR_UPD					\
 	CONFIG_AMCC_DEF_ENV_NAND_UPD					\
 	"kernel_addr=fff10000\0"					\