AGESA: Add agesa_helper.h header

These definitions do not require AGESA.h include,
and we will eventually remove agesawrapper.h files.

Change-Id: I1b5b78409828aaf2616e177bb54a054960c3869f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/18588
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/cpu/amd/agesa/family12/fixme.c

@@ -14,7 +14,8 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 void amd_initcpuio(void)

src/cpu/amd/agesa/family14/fixme.c

@@ -14,7 +14,9 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 /* Define AMD Ontario APPU SSID/SVID */

src/cpu/amd/agesa/family15/fixme.c

@@ -14,7 +14,8 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 UINT64

src/cpu/amd/agesa/family15rl/fixme.c

@@ -14,7 +14,8 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 void amd_initcpuio(void)

src/cpu/amd/agesa/family15tn/fixme.c

@@ -14,7 +14,8 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 void amd_initcpuio(void)

src/cpu/amd/agesa/family16kb/fixme.c

@@ -14,7 +14,8 @@
  */
 
 #include <cpu/x86/mtrr.h>
-#include <northbridge/amd/agesa/agesawrapper.h>
+#include <northbridge/amd/agesa/agesa_helper.h>
+#include <AGESA.h>
 #include "amdlib.h"
 
 void amd_initcpuio(void)