drm/amdgpu/mes12: allocate hw_resource_1 buffer once

Allocate the buffer at sw init time so we don't alloc
and free it for every suspend/resume or reset cycle.

Reviewed-by: Shaoyun.liu <shaouyun.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>