from typing import List
import re


def board_is_nrf(content: List[str]) -> bool:
    """Check if board is nRF based.

    Args:
        content: DT file content as list of lines.

    Returns:
        True if board is nRF based, False otherwise.
    """

    for line in content:
        m = re.match(r'^#include\s+(?:"|<).*nrf.*(?:>|").*', line)
        if m:
            return True

    return False