Fix 'make headers_check' on m32r

> asm-m32r/page.h requires asm-generic/memory_model.h, which does not exist
> asm-m32r/ptrace.h requires asm/m32r.h, which does not exist
> asm-m32r/signal.h requires linux/linkage.h, which does not exist
> asm-m32r/unistd.h requires asm/syscall.h, which does not exist
> asm-m32r/user.h requires asm/processor.h, which does not exist

Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/include/asm-m32r/ptrace.h b/include/asm-m32r/ptrace.h
index a07fa90..2d2a6c9 100644
--- a/include/asm-m32r/ptrace.h
+++ b/include/asm-m32r/ptrace.h
@@ -12,8 +12,6 @@
  *   Copyright (C) 2001-2002, 2004  Hirokazu Takata <takata at linux-m32r.org>
  */
 
-#include <asm/m32r.h>		/* M32R_PSW_BSM, M32R_PSW_BPM */
-
 /* 0 - 13 are integer registers (general purpose registers).  */
 #define PT_R4		0
 #define PT_R5		1
@@ -140,6 +138,8 @@
 
 #ifdef __KERNEL__
 
+#include <asm/m32r.h>		/* M32R_PSW_BSM, M32R_PSW_BPM */
+
 #define __ARCH_SYS_PTRACE	1
 
 #if defined(CONFIG_ISA_M32R2) || defined(CONFIG_CHIP_VDEC2)