The MT7688KN is a multi-chip package with 8MiB DDR1 KGD. So the DDR type from bootstrap register must be ignored, and always be assumed as DDR1. This patch fixes an issue that mt7628_ddr_pad_ldo_config() may be passed with a wrong ddr_type in MT7688KN. Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> Reviewed-by: Stefan Roese <sr@denx.de>