src: Use tabs for indentation

Change-Id: I6b40aaf5af5d114bbb0cd227dfd50b0ee19eebba
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28934
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/apollolake/chip.c

@@ -573,7 +573,7 @@ static void glk_fsp_silicon_init_params_cb(
 
 void __weak mainboard_devtree_update(struct device *dev)
 {
-       /* Override dev tree settings per board */
+	/* Override dev tree settings per board */
 }
 
 void platform_fsp_silicon_init_params_cb(FSPS_UPD *silupd)