CONFIG_AMD_HSMP is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

AMD HSMP Driver

modulename: amd_hsmp.ko

configname: CONFIG_AMD_HSMP

Linux Kernel Configuration
└─>Device Drivers
└─>X86 Platform Specific Device Drivers
└─>AMD HSMP Driver
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
The driver provides a way for user space tools to monitor and manage
system management functionality on EPYC server CPUs from AMD.

Host System Management Port (HSMP) interface is a mailbox interface
between the x86 core and the System Management Unit (SMU) firmware.

If you choose to compile this driver as a module the module will be
called amd_hsmp.

source code: