Moved initialization of MPC512x_FEC Ethernet driver to CPU directory

Added a cpu_eth_init() function to MPC512x CPU directory and
removed code from net/eth.c

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/cpu/mpc512x/cpu.c b/cpu/mpc512x/cpu.c
index 1f39ac4..d432d99 100644
--- a/cpu/mpc512x/cpu.c
+++ b/cpu/mpc512x/cpu.c
@@ -30,6 +30,7 @@
 #include <common.h>
 #include <command.h>
 #include <mpc512x.h>
+#include <netdev.h>
 #include <asm/processor.h>
 
 #if defined(CONFIG_OF_LIBFDT)
@@ -195,3 +196,15 @@
 #endif
 }
 #endif
+
+#ifdef CONFIG_MPC512x_FEC
+/* Default initializations for FEC controllers.  To override,
+ * create a board-specific function called:
+ * 	int board_eth_init(bd_t *bis)
+ */
+
+int cpu_eth_init(bd_t *bis)
+{
+	return mpc512x_fec_initialize(bis);
+}
+#endif