global: Make <asm/global_data.h> include <asm/u-boot.h>

This follows the example of RISC-V where <asm/global_data.h> includes
<asm/u-boot.h> directly as "gd" includes a reference to bd_info already
and so the first must include the second anyhow. We then remove
<asm/u-boot.h> from all of the places which include references to "gd"
an so have <asm/global_data.h> already.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c b/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
index 523367d..29399bc 100644
--- a/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
+++ b/arch/powerpc/cpu/mpc8xxx/fsl_pamu.c
@@ -5,12 +5,14 @@
  * Copyright 2012-2016 Freescale Semiconductor, Inc.
  */
 
-#include <asm/u-boot.h>
+#include <config.h>
 #include <log.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
 #include <malloc.h>
 #include <asm/fsl_pamu.h>
+#include <asm/io.h>
+#include <asm/ppc.h>
 
 struct paace *ppaact;
 struct paace *sec;