phy: samsung: ufs: rename cfg to cfgs for clarification

Rename **cfg to **cfgs to clarify the naming.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Link: https://lore.kernel.org/r/20220607072907.127000-3-chanho61.park@samsung.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>