drm/hisilicon: Add new clock/resolution configurations

Add the three new pll config for corresponding resolution 1440x900 and
1600x900, 640x480 for hibmc

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Gong junjie <gongjunjie2@huawei.com>
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1577774571-60493-1-git-send-email-tiantao6@hisilicon.com