src/: Replace some __PRE_RAM__ use

Change-Id: Iaa56e7b98aad33eeb876edd7465c56c80fd1ac18
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35398
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/lib/reg_script.c

@@ -36,7 +36,8 @@
 #endif
 
 #define POLL_DELAY 100 /* 100us */
-#if defined(__PRE_RAM__)
+
+#ifdef __SIMPLE_DEVICE__
 #define EMPTY_DEV 0
 #else
 #define EMPTY_DEV NULL
@@ -68,7 +69,7 @@ reg_script_get_step(struct reg_script_context *ctx)
 
 static struct resource *reg_script_get_resource(struct reg_script_context *ctx)
 {
-#if defined(__PRE_RAM__)
+#ifdef __SIMPLE_DEVICE__
 	return NULL;
 #else
 	struct resource *res;