soc/intel/broadwell: Convert some CONFIG(CHROMEOS) preprocessor

Change-Id: Ie3feee0448175db2b6ed4e8e37d92de3af9be371
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50252
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/broadwell/gma.c

@@ -515,12 +515,8 @@ static void igd_init(struct device *dev)
 
 	/* Wait for any configured pre-graphics delay */
 	if (!acpi_is_wakeup_s3()) {
-#if CONFIG(CHROMEOS)
-		if (display_init_required())
+		if (!CONFIG(CHROMEOS) || display_init_required())
 			mdelay(CONFIG_PRE_GRAPHICS_DELAY);
-#else
-		mdelay(CONFIG_PRE_GRAPHICS_DELAY);
-#endif
 	}
 
 	/* Early init steps */