drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2

drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2

[ Upstream commit 90dbc0bc2aa60021615969841fed06790c992bde ]

resolving the issue of incorrect type definitions potentially causing calculation errors.

Fixes: 54f7f3ca982a ("drm/amdgpu/swm14: Update power limit logic")
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e3a03d0ae16d6b56e893cce8e52b44140e1ed985)
Signed-off-by: Sasha Levin <sashal@kernel.org>