cm4008, cm41xx: fix build warnings

Fix these:
cm4008.c: In function 'board_eth_init':
cm4008.c:79: warning: implicit declaration of function 'ks8695_eth_initialize'

cm41xx.c: In function 'board_eth_init':
cm41xx.c:79: warning: implicit declaration of function 'ks8695_eth_initialize'

While we are at it, sort include list in netdev.h

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Greg Ungerer <greg.ungerer@opengear.com>

board/cm4008/cm4008.c

@@ -30,6 +30,7 @@
 
 #include <common.h>
 #include <asm/arch/platform.h>
+#include <netdev.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 

board/cm41xx/cm41xx.c

@@ -30,6 +30,7 @@
 
 #include <common.h>
 #include <asm/arch/platform.h>
+#include <netdev.h>
 
 DECLARE_GLOBAL_DATA_PTR;