common: Drop asm/ptrace.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/mpc8xx/interrupts.c b/arch/powerpc/cpu/mpc8xx/interrupts.c
index 3efe895..eef1951 100644
--- a/arch/powerpc/cpu/mpc8xx/interrupts.c
+++ b/arch/powerpc/cpu/mpc8xx/interrupts.c
@@ -12,6 +12,7 @@
 #include <asm/cpm_8xx.h>
 #include <asm/processor.h>
 #include <asm/io.h>
+#include <asm/ptrace.h>
 
 /************************************************************************/
 
diff --git a/arch/powerpc/cpu/mpc8xx/traps.c b/arch/powerpc/cpu/mpc8xx/traps.c
index 899bcd8..56794b0 100644
--- a/arch/powerpc/cpu/mpc8xx/traps.c
+++ b/arch/powerpc/cpu/mpc8xx/traps.c
@@ -16,6 +16,7 @@
  */
 
 #include <common.h>
+#include <asm/ptrace.h>
 #include <command.h>
 #include <asm/processor.h>