x86: broadwell: Update PCH to work in TPL

The early init should only happen once. Update the probe method to
deal with TPL, SPL and U-Boot proper.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NBin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/broadwell/pch.c

@@ -599,10 +599,16 @@ static int broadwell_pch_init(struct udevice *dev)
 
 static int broadwell_pch_probe(struct udevice *dev)
 {
-	if (!(gd->flags & GD_FLG_RELOC))
-		return broadwell_pch_early_init(dev);
-	else
+	if (CONFIG_IS_ENABLED(X86_32BIT_INIT)) {
+		if (!(gd->flags & GD_FLG_RELOC))
+			return broadwell_pch_early_init(dev);
+		else
+			return broadwell_pch_init(dev);
+	} else if (IS_ENABLED(CONFIG_SPL) && !IS_ENABLED(CONFIG_SPL_BUILD)) {
 		return broadwell_pch_init(dev);
+	} else {
+		return 0;
+	}
 }
 
 static int broadwell_pch_get_spi_base(struct udevice *dev, ulong *sbasep)