CONFIG_ARCH_STRATIX10 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64
default or selected kernelversion does not have config value CONFIG_ARCH_STRATIX10.
Result is shown for kernelversion 6.9.9

Altera's Stratix 10 SoCFPGA Family

modulename: clk-s10.ko

and/or

clk-pll-s10.ko

configname: CONFIG_ARCH_STRATIX10

Linux Kernel Configuration
└─>Platform selection
└─>Altera's Stratix 10 SoCFPGA Family
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This enables support for Altera's Stratix 10 SoCFPGA Family.

source code:
drivers/clk/socfpga/clk-s10.c