powercp: mpc8xx: move commproc.h

include/commproc.h is dedicated to the 8xx, rename it cpm_8xx.h and
move it into arch/powerpc/include/asm

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
diff --git a/drivers/spi/mpc8xx_spi.c b/drivers/spi/mpc8xx_spi.c
index b5bd558..eb035e9 100644
--- a/drivers/spi/mpc8xx_spi.c
+++ b/drivers/spi/mpc8xx_spi.c
@@ -19,7 +19,7 @@
 
 #include <common.h>
 #include <mpc8xx.h>
-#include <commproc.h>
+#include <asm/cpm_8xx.h>
 #include <linux/ctype.h>
 #include <malloc.h>
 #include <post.h>