drm/hisilicon: Features to support reading resolutions from EDID

mainline inclusion
from mainline-v5.14.0-rc7
commit a0d078d0
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I469VQ


CVE: NA

Refactoring hibmc_vdac_init, hibmc_connector_init method.

---------------------------------------

Use drm_get_edid to get the resolution, if that fails, set it to
a fixed resolution. Rewrite the desrtoy callback function to release
resources.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1600778670-60370-3-git-send-email-tiantao6@hisilicon.com



Signed-off-by: gouhao <gouhao@uniontech.com>
Reviewed-by: tian tao <tiantao6@hisilicon.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>