drm/amdkfd: Fill the name field in node topology with asic name v2

The name field in node topology has not been used. We re-purpose it to
hold the asic name, which can be queried by user space applications
through sysfs.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>