doc: boards: extensions: simplify DTS binding description extraction

import logging

import os

import pickle

import re

import subprocess

import sys

from collections import namedtuple

            The first sentence found in the text, or the entire text if no sentence

            boundary is found.

        """

        # Split the text into lines

        lines = text.splitlines()

        if not text:

            return ""

        # Trim leading and trailing whitespace from each line and ignore completely blank lines

        lines = [line.strip() for line in lines]

        text = text.replace('\n', ' ')

        # Split by double spaces to get paragraphs

        paragraphs = text.split('  ')

        first_paragraph = paragraphs[0].strip()

        if not lines:

            return ""

        # Look for a period followed by a space in the first paragraph

        period_match = re.search(r'(.*?)\.(?:\s|$)', first_paragraph)

        if period_match:

            return period_match.group(1).strip()

        # Case 1: Single line followed by blank line(s) or end of text

        if len(lines) == 1 or (len(lines) > 1 and lines[1] == ""):

            first_line = lines[0]

            # Check for the first period

            period_index = first_line.find(".")

            # If there's a period, return up to the period; otherwise, return the full line

            return first_line[: period_index + 1] if period_index != -1 else first_line

        # Case 2: Multiple contiguous lines, treat as a block

        block = " ".join(lines)

        period_index = block.find(".")

        # If there's a period, return up to the period; otherwise, return the full block

        return block[: period_index + 1] if period_index != -1 else block

        # If no period in the first paragraph, return the entire first paragraph

        return first_paragraph

    @classmethod

    def get_cached_description(cls, node):