Map the feature control MSR config from the OVMF platform info HOB to FIRST_SMI_HANDLER_CONTEXT. (Note that CpuHotplugSmm already consumes -- indirectly -- the "MdePkg/Library/DxeHobLib/DxeHobLib.inf" library instance, according to the build report; therefore adding an explicit HobLib class dependency shouldn't *generally* increase this SMM driver's exposure. The consumed lib instances are the same before and after this patch, at least in "OvmfPkgIa32X64.dsc".) Fixes: https://github.com/tianocore/edk2/issues/11188 Signed-off-by: Laszlo Ersek <laszlo.ersek@posteo.net>