!1689 [openEuler-1.0-LTS] drm/atomic-helper: Bump vblank timeout to 100 ms

Merge Pull Request from: @zh-hhhhh 
 
When the restart test is performed several times, the system will report the error "vblank wait time out", which is not a mandatory problem, but an occasional problem

bugzilla: https://gitee.com/openeuler/kernel/issues/I7MBKM
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=b3198c38f02d54a5e964258a2180d502abe6eaf0 
 
Link:https://gitee.com/openeuler/kernel/pulls/1689

 

Reviewed-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>