bootstate: remove need for #ifdef ENV_RAMSTAGE

The BOOT_STATE_INIT_ENTRY macro can only be used in ramstage, however
the current state of the header meant bad build errors in non-ramstage.
Therefore, people had to #ifdef in the source. Remove that requirement.

Change-Id: I8755fc68bbaca6b72fbe8b4db4bcc1ccb35622bd
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11492
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

src/northbridge/intel/sandybridge/mrccache.c

@@ -128,7 +128,7 @@ static struct mrc_data_container *find_current_mrc_cache_local
 /* SPI code needs malloc/free.
  * Also unknown if writing flash from XIP-flash code is a good idea
  */
-#if !defined(__PRE_RAM__)
+
 /* find the first empty block in the MRC cache area.
  * If there's none, return NULL.
  *
@@ -229,7 +229,6 @@ static void update_mrc_cache(void *unused)
 }
 
 BOOT_STATE_INIT_ENTRY(BS_WRITE_TABLES, BS_ON_ENTRY, update_mrc_cache, NULL);
-#endif
 
 struct mrc_data_container *find_current_mrc_cache(void)
 {