add new vram_reserve_block structure and atomfirmware_internal_constants enumeration
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NLuben Tuikov <luben.tuikov@amd.com>
Signed-off-by: NTianci.Yin <tianci.yin@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>