Remove erroneous or extra spd.h #includers.

Many of the spd.h #includers don't need it,
and wanted to have spd_sdram() declared instead.
Since they didn't get that, some also had open
coded extern declarations of it instead or as well.
Fix it all up by using spd_sdram.h where needed.

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/board/freescale/mpc8349emds/mpc8349emds.c b/board/freescale/mpc8349emds/mpc8349emds.c
index 9f4ac8e..6c82596 100644
--- a/board/freescale/mpc8349emds/mpc8349emds.c
+++ b/board/freescale/mpc8349emds/mpc8349emds.c
@@ -28,11 +28,9 @@
 #include <asm/mpc8349_pci.h>
 #include <i2c.h>
 #include <spi.h>
-#include <spd.h>
 #include <miiphy.h>
-#if defined(CONFIG_SPD_EEPROM)
 #include <spd_sdram.h>
-#endif
+
 #if defined(CONFIG_OF_LIBFDT)
 #include <libfdt.h>
 #endif