valgrind: fix ptest compilation for PowerPC64

The fix is similar to what was done for PowerPC32.
It solves below error, while compiling for PowerPC64,

-- snip --
| ../../../../valgrind-3.13.0/none/tests/ppc64/test_isa_2_06_part2.c: In function 'usage':
| ../../../../valgrind-3.13.0/none/tests/ppc64/test_isa_2_06_part2.c:1778:3: warning: implicit declaration of function 'fprintf' [-Wimplicit-function-declaration]
|    fprintf(stderr,
|    ^~~~~~~
| ../../../../valgrind-3.13.0/none/tests/ppc64/test_isa_2_06_part2.c:1778:3: warning: incompatible implicit declaration of built-in function 'fprintf'
| ../../../../valgrind-3.13.0/none/tests/ppc64/test_isa_2_06_part2.c:1778:3: note: include '<stdio.h>' or provide a declaration of 'fprintf'
| ../../../../valgrind-3.13.0/none/tests/ppc64/test_isa_2_06_part2.c:1778:11: error: 'stderr' undeclared (first use in this function)
|    fprintf(stderr,
|            ^~~~~~
-- snip --

(From OE-Core rev: 9f82bb4bf3d0ded246eb252b3f9b4b618b22fc95)

Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/valgrind/valgrind/ppc-headers.patch

@@ -12,6 +12,11 @@ The #ifdef HAS_VSX guard is wrongly placed. It makes the standard
 include headers not be used. Causing a build failure. Fix by moving
 the #ifdef HAS_VSX after the standard includes.
 
+[v2 changes]
+- Add #ifdef HAS_VSX guard correctly for ppc64 test_isa_2_06_partx.c 
+  test cases. The changes are similar to what was done for ppc32.
+
+Signed-off-by: Jagadeesh Krishnanjanappa <jkrishnanjanappa@mvista.com>
 Index: none/tests/ppc32/test_isa_2_06_part3.c
 ===================================================================
 --- a/none/tests/ppc32/test_isa_2_06_part3.c	(revision 16449)
@@ -85,3 +90,76 @@ Index: none/tests/ppc32/test_isa_2_06_part2.c
  #ifndef __powerpc64__
  typedef uint32_t HWord_t;
  #else
+Index: none/tests/ppc64/test_isa_2_06_part3.c
+===================================================================
+--- a/none/tests/ppc64/test_isa_2_06_part3.c	(revision 16449)
++++ b/none/tests/ppc64/test_isa_2_06_part3.c	(revision 16450)
+@@ -20,17 +20,18 @@
+  The GNU General Public License is contained in the file COPYING.
+  */
+ 
+-#ifdef HAS_VSX
+-
+ #include <stdio.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <malloc.h>
+-#include <altivec.h>
+ #include <math.h>
+ #include <unistd.h>    // getopt
+ 
++#ifdef HAS_VSX
++
++#include <altivec.h>
++
+ #ifndef __powerpc64__
+ typedef uint32_t HWord_t;
+ #else
+Index: none/tests/ppc64/test_isa_2_06_part1.c
+===================================================================
+--- a/none/tests/ppc64/test_isa_2_06_part1.c	(revision 16449)
++++ b/none/tests/ppc64/test_isa_2_06_part1.c	(revision 16450)
+@@ -20,13 +20,14 @@
+  The GNU General Public License is contained in the file COPYING.
+  */
+ 
+-#ifdef HAS_VSX
+-
+ #include <stdio.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <malloc.h>
++
++#ifdef HAS_VSX
++
+ #include <altivec.h>
+ 
+ #ifndef __powerpc64__
+Index: none/tests/ppc64/test_isa_2_06_part2.c
+===================================================================
+--- a/none/tests/ppc64/test_isa_2_06_part2.c	(revision 16449)
++++ b/none/tests/ppc64/test_isa_2_06_part2.c	(revision 16450)
+@@ -20,17 +20,18 @@
+  The GNU General Public License is contained in the file COPYING.
+  */
+ 
+-#ifdef HAS_VSX
+-
+ #include <stdio.h>
+ #include <stdint.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <malloc.h>
+-#include <altivec.h>
+ #include <math.h>
+ #include <unistd.h>    // getopt
+ 
++#ifdef HAS_VSX
++
++#include <altivec.h>
++
+ #ifndef __powerpc64__
+ typedef uint32_t HWord_t;
+ #else