Asrock E350M1: Use SPD read code from F14 wrapper

Changes:
 - Get rid of the E350M1 mainboard specific code and use the
   platform generic function wrapper that was added in change
   http://review.coreboot.org/#/c/2497/
   AMD f14: Add SPD read functions to wrapper code

 - Move DIMM addresses into devicetree.cb

 - Add the ASF init that used to be in the SPD read code into
   mainboard_enable()

Notes:
 - The DIMM reads only happen in romstage, so the function is not
   available in ramstage.  Point the read-SPD callback to a generic
   function in ramstage.

Change-Id: I08c2aebc62facc14f94400ee1ad188901ba73f19
Signed-off-by: Jens Rottmann <JRottmann@LiPPERTembedded.de>
Reviewed-on: http://review.coreboot.org/2875
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)

src/mainboard/asrock/e350m1/BiosCallOuts.c

@@ -22,6 +22,7 @@
 #include "BiosCallOuts.h"
 #include "heapManager.h"
 #include "SB800.h"
+#include <northbridge/amd/agesa/family14/dimmSpd.h>
 
 CONST BIOS_CALLOUT_STRUCT BiosCallouts[] =
 {
@@ -421,7 +422,11 @@ AGESA_STATUS BiosReset (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
 AGESA_STATUS BiosReadSpd (UINT32 Func, UINT32 Data, VOID *ConfigPtr)
 {
   AGESA_STATUS Status;
-  Status = AmdMemoryReadSPD (Func, Data, ConfigPtr);
+#ifdef __PRE_RAM__
+  Status = agesa_ReadSPD (Func, Data, ConfigPtr);
+#else
+  Status = AGESA_UNSUPPORTED;
+#endif
 
   return Status;
 }