drivers: uart_ns16550: restore config UART_NS16550_PORT_1_PCI
drivers: uart_ns16550: restore config UART_NS16550_PORT_1_PCI

The CONFIG_UART_NS16550_PORT_1_PCI was accidentally removed in
commit 26b474c987ce2666d25f79d8768753ba78172166. So adds it back.
This allows PCI driver to probe the resources for port 1.

Signed-off-by: Daniel Leung <d94e04d205b5962d7873a139ef298b03c1717f72@intel.com>

zephyrproject-rtos/zephyr,kraj/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,kraj/zephyr,punitvara/zephyr,ldts/zephyr,nashif/zephyr,galak/zephyr,explora26/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,finikorg/zephyr,ldts/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,Vudentz/zephyr,nashif/zephyr,ldts/zephyr,Vudentz/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,explora26/zephyr,nashif/zephyr,galak/zephyr,Vudentz/zephyr,ldts/zephyr,finikorg/zephyr,explora26/zephyr,Vudentz/zephyr,galak/zephyr,punitvara/zephyr,finikorg/zephyr,ldts/zephyr,kraj/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr