microblaze: Switch ELF_ARCH code to 189

Switch arch code to 189, the registered code in the upstream
version of binutils. Continue to accept the experimental 0xbaab.

Signed-off-by: Edgar E. Iglesias <[e-mail]>
Signed-off-by: Michal Simek <[e-mail]>

arch/microblaze/include/asm/elf.h

···
  * I've snaffled the value from the microblaze binutils source code
  * /binutils/microblaze/include/elf/microblaze.h
  */
-#define EM_XILINX_MICROBLAZE	0xbaab
-#define ELF_ARCH		EM_XILINX_MICROBLAZE
+#define EM_MICROBLAZE		189
+#define EM_MICROBLAZE_OLD	0xbaab
+#define ELF_ARCH		EM_MICROBLAZE
 
 /*
  * This is used to ensure we don't load something for the wrong architecture.
  */
-#define elf_check_arch(x)	((x)->e_machine == EM_XILINX_MICROBLAZE)
+#define elf_check_arch(x)	((x)->e_machine == EM_MICROBLAZE \
+				 || (x)->e_machine == EM_MICROBLAZE_OLD)
 
 /*
  * These are used to set parameters in the core dumps.

arch/microblaze/kernel/ptrace.c

···
 		ret = -1L;
 
 	if (unlikely(current->audit_context))
-		audit_syscall_entry(EM_XILINX_MICROBLAZE, regs->r12,
+		audit_syscall_entry(EM_MICROBLAZE, regs->r12,
 				    regs->r5, regs->r6,
 				    regs->r7, regs->r8);