driver: espi: add acpi and customized op codes for lpc r/w request func.

This CL introduces two kinds of op codes for espi_api_lpc_read_request
and espi_api_lpc_write_request Zephyr espi api functions.

One is for supporting ACPI and shared memory region to access ACPI data.
The other is customized for certain platforms such as Chromebook and so
on.

This CL also introduced the following configurations to add the
flexibility of these settings.

1. ESPI_PERIPHERAL_ACPI_SHM_REGION_PORT_NUM:
   Host I/O peripheral port number for shared memory region. The default
   value is default 0x0900

2. ESPI_NPCX_PERIPHERAL_ACPI_SHD_MEM_SIZE:
   Host I/O peripheral port size for shared memory in npcx series.
   Please notice the valid value in npcx ec series for this option is
   8/16/32/64/128/256/512/1024/2048/4096 bytes. The default value is 256
   bytes.

This CL also turn off hardware-wire feature which generates VW events
that connected to hardware signals such as SMI and SCI. We will set
VW output events directly via espi_api_send_vwire() api function.

Signed-off-by: Mulin Chao <mlchao@nuvoton.com>