powerpc/xmon: Enable disassembly files (compilation changes)

After updating ppc-dis.c, ppc-opc.c and ppc.h the following changes were
made to enable compilation and working of xmon:

  1.  Remove all disassembler_info
  2.  Use xmon's printf/print_address to output data and addresses
      respectively.
  3.  All bfd_* types and casts have been removed.
  4.  Optimizations related to opcd_indices have been removed.
  5.  The dialect is set based on cpu features.
  6.  PPC_OPCODE_CLASSIC is no longer supported in the new
      disassembler.
  7.  VLE opcode parsing and printing has been stripped.
  8.  Coding style conventions used for those routines has
      been retained and it does not match our CodingStyle.
  9.  The highest supported dialect is POWER9.
  10. Defined ATTRIBUTE_UNUSED in ppc-dis.c.
  11. Defined _(x) in ppc-dis.c.

Finally, we remove the dependency on BROKEN so that XMON_DISASSEMBLY can
be enabled again.

Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/Kconfig.debug

@@ -115,7 +115,6 @@ config XMON_DEFAULT
 config XMON_DISASSEMBLY
 	bool "Include disassembly support in xmon"
 	depends on XMON
-	depends on BROKEN
 	default y
 	help
 	  Include support for disassembling in xmon. You probably want

arch/powerpc/xmon/ppc-opc.c

@@ -19,10 +19,14 @@
    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
    02110-1301, USA.  */
 
-#include "sysdep.h"
-#include <stdio.h>
-#include "opcode/ppc.h"
-#include "opintl.h"
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+#include "nonstdio.h"
+#include "ppc.h"
+
+#define ATTRIBUTE_UNUSED
+#define _(x)	x
 
 /* This file holds the PowerPC opcode table.  The opcode table
    includes almost all of the extended instruction mnemonics.  This

arch/powerpc/xmon/ppc.h

@@ -21,8 +21,6 @@ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, US
 #ifndef PPC_H
 #define PPC_H
 
-#include "bfd_stdint.h"
-
 #ifdef __cplusplus
 extern "C" {
 #endif