CONFIG_PAPR_SCM is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

Support for the PAPR Storage Class Memory interface

modulename: papr_scm.ko

configname: CONFIG_PAPR_SCM

Linux Kernel Configuration
└─>Support for the PAPR Storage Class Memory interface
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Enable access to hypervisor provided storage class memory.

source code:
arch/powerpc/platforms/pseries/papr_scm.c