Replace some ENV_ROMSTAGE with ENV_RAMINIT

With a combined bootblock+romstage ENV_ROMSTAGE might no
longer evaluate true.

Change-Id: I733cf4e4ab177e35cd260318556ece1e73d082dc
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63376
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Raul Rangel <rrangel@chromium.org>

src/lib/cbfs.c

@@ -106,7 +106,7 @@ static inline bool fsps_env(void)
 static inline bool fspm_env(void)
 {
 	/* FSP-M is assumed to be loaded in romstage. */
-	if (ENV_ROMSTAGE)
+	if (ENV_RAMINIT)
 		return true;
 	return false;
 }