drm/amdgpu: fix initial connector audio value

stable inclusion
from stable-v5.10.150
commit 1c7d957c5d81930b5cf514c0f42150796c1823e0
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0XA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1c7d957c5d81930b5cf514c0f42150796c1823e0



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[ Upstream commit 4bb71fce ]

This got lost somewhere along the way, This fixes
audio not working until set_property was called.

Signed-off-by: hongao <hongao@uniontech.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>