default or selected kernelversion does not have config value CONFIG_USB_GADGET_S3C_HSOTG.
Result is shown for kernelversion 5.6.18

S3C HS/OtG USB Device controller

configname: CONFIG_USB_GADGET_S3C_HSOTG

USB Peripheral Controller
└─>S3C HS/OtG USB Device controller
In linux kernel since version 2.6.31 (release Date: 2009-09-09)  
The Samsung S3C64XX USB2.0 high-speed gadget controller
integrated into the S3C64XX series SoC.

selects
CONFIG_USB_GADGET_S3C_HSOTG_PIO
CONFIG_USB_GADGET_DUALSPEED


is selected by
CONFIG_USB_S3C_HSOTG