drm/amdgpu: Correctly initialize thermal controller for GPUs with Powerplay table v0 (e.g Hawaii)

[ Upstream commit bbc25dadc7ed19f9d6b2e30980f0eb4c741bb8bf ]

Initialize thermal controller fields in the PowerPlay table for Hawaii
GPUs, so that fan speeds are reported.

Signed-off-by: Sandeep Raghuraman <sandy.8925@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>