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

CONFIG_PPC_CPM_NEW_BINDING (not configurable)

configname: CONFIG_PPC_CPM_NEW_BINDING

Linux Kernel Configuration
└─>Platform support
└─>PPC_CPM_NEW_BINDING
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Select this if your board has been converted to use the new
device tree bindings for CPM, and no longer needs the
ioport callbacks or the platform device glue code.

The fs_enet and cpm_uart drivers will be built as
of_platform devices.