drivers: serial: xlnx_ps: update referenced SoC configuration items
drivers: serial: xlnx_ps: update referenced SoC configuration items

Update the Kconfig configuration items used to determine if the current
target is based on the Zynq-7000 SoC family as part of the re-organi-
zation of the Zynq-7000 SoC configuration data.

Signed-off-by: Immo Birnbaum <9d53277017f7b972042afc81794f782b84cac388@Weidmueller.com>

finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,galak/zephyr