sim: dv-pal: always use CPU_INDEX

Since the core always provides CPU_INDEX, use it.  The current code
doesn't actually use it even though it should since it doesn't include
the right headers.

sim/common/ChangeLog

@@ -1,3 +1,8 @@
+2015-12-25  Mike Frysinger  <vapier@gentoo.org>
+
+	* dv-pal.c: Include config.h and sim-main.h.
+	(hw_pal_io_read_buffer): Always call CPU_INDEX.
+
 2015-12-24  Mike Frysinger  <vapier@gentoo.org>
 
 	* sim-options.c (standard_options): Always enable load-lma and

sim/common/dv-pal.c

@@ -19,7 +19,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-
+#include "config.h"
+#include "sim-main.h"
 #include "hw-main.h"
 #include "sim-io.h"
 
@@ -349,11 +350,7 @@ hw_pal_io_read_buffer (struct hw *me,
     {
 
     case hw_pal_cpu_nr_register:
-#ifdef CPU_INDEX
       *byte = CPU_INDEX (hw_system_cpu (me));
-#else
-      *byte = 0;
-#endif
       HW_TRACE ((me, "read - cpu-nr %d\n", *byte));
       break;