miss RAP TA in loop. (when i == 4)

Fix:
drm/amdgpu: add RAP TA version print in amdgpu_firmware_info
Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reported-by: Candice Li <candice.li@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>