ppc4xx: Move ppc4xx headers to powerpc include directory

This patch moves some ppc4xx related headers from the common include
directory (include/) to the powerpc specific one
(arch/powerpc/include/asm/). This way to common include directory is not
so cluttered with files.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/post/cpu/ppc4xx/denali_ecc.c b/post/cpu/ppc4xx/denali_ecc.c
index 6ab1593..50ae7fb 100644
--- a/post/cpu/ppc4xx/denali_ecc.c
+++ b/post/cpu/ppc4xx/denali_ecc.c
@@ -45,7 +45,7 @@
 #include <asm/processor.h>
 #include <asm/mmu.h>
 #include <asm/io.h>
-#include <ppc440.h>
+#include <asm/ppc440.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
diff --git a/post/cpu/ppc4xx/ether.c b/post/cpu/ppc4xx/ether.c
index a58db04..7f44f38 100644
--- a/post/cpu/ppc4xx/ether.c
+++ b/post/cpu/ppc4xx/ether.c
@@ -44,8 +44,8 @@
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <asm/processor.h>
-#include <405_mal.h>
-#include <ppc4xx_enet.h>
+#include <asm/ppc4xx-mal.h>
+#include <asm/ppc4xx-emac.h>
 #include <malloc.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/post/cpu/ppc4xx/fpu.c b/post/cpu/ppc4xx/fpu.c
index e9b96dd..9f49690 100644
--- a/post/cpu/ppc4xx/fpu.c
+++ b/post/cpu/ppc4xx/fpu.c
@@ -29,7 +29,7 @@
     defined(CONFIG_440EPX)
 
 #include <asm/processor.h>
-#include <ppc4xx.h>
+#include <asm/ppc4xx.h>
 
 
 int fpu_status(void)