drm/amdgpu: support psp vbflash sysfs for MP0 13_0_10

Add support for PSP vbflash sysfs interface with MP0 version v13.0.10.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>