default or selected kernelversion does not have config value CONFIG_PHY_SAMSUNG_UFS.
Result is shown for kernelversion 6.9-rc1

Exynos SoC series UFS PHY driver

modulename: phy-exynos-ufs.ko

configname: CONFIG_PHY_SAMSUNG_UFS

Linux Kernel Configuration
└─>Device Drivers
└─>PHY Subsystem
└─>Device Tree and Open Firmware support
└─>Exynos SoC series UFS PHY driver
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
Enable this to support the Samsung Exynos SoC UFS PHY driver for
Samsung Exynos SoCs. This driver provides the interface for UFS host
controller to do PHY related programming.

source code:

depends
CONFIG_OF
CONFIG_ARCH_EXYNOS or CONFIG_COMPILE_TEST