mx5 configs: CONFIG_PRIME should really be CONFIG_ETHPRIME

Signed-off-by: Wolfgang Grandegger <wg@denx.de>
Acked-by: Stefano Babic <sbabic@denx.de>
diff --git a/include/configs/mx53smd.h b/include/configs/mx53smd.h
index c117a33..cc68749 100644
--- a/include/configs/mx53smd.h
+++ b/include/configs/mx53smd.h
@@ -93,7 +93,7 @@
 
 #define CONFIG_BOOTDELAY	3
 
-#define CONFIG_PRIME	"FEC0"
+#define CONFIG_ETHPRIME		"FEC0"
 
 #define CONFIG_LOADADDR		0x70800000	/* loadaddr env var */
 #define CONFIG_SYS_TEXT_BASE    0x77800000