treewide: Use OF_REAL instead of !OF_PLATDATA

Now that we have a 'positive' Kconfig option, use this instead of the
negative one, which is harder to understand.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/intel_common/p2sb.c b/arch/x86/cpu/intel_common/p2sb.c
index d73ae43..5dc8163 100644
--- a/arch/x86/cpu/intel_common/p2sb.c
+++ b/arch/x86/cpu/intel_common/p2sb.c
@@ -88,7 +88,7 @@
 	struct p2sb_uc_priv *upriv = dev_get_uclass_priv(dev);
 	struct p2sb_plat *plat = dev_get_plat(dev);
 
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if CONFIG_IS_ENABLED(OF_REAL)
 	int ret;
 	u32 base[2];
 
@@ -159,7 +159,7 @@
 
 static int p2sb_child_post_bind(struct udevice *dev)
 {
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if CONFIG_IS_ENABLED(OF_REAL)
 	struct p2sb_child_plat *pplat = dev_get_parent_plat(dev);
 	int ret;
 	u32 pid;
@@ -177,7 +177,7 @@
 	.set_hide	= intel_p2sb_set_hide,
 };
 
-#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+#if CONFIG_IS_ENABLED(OF_REAL)
 static const struct udevice_id p2sb_ids[] = {
 	{ .compatible = "intel,p2sb" },
 	{ }