drivers: wifi: esp_at: enable CONFIG_WIFI_ESP_AT_CIPDINFO_USE automatically

This fixes DNS resolve failure (CONFIG_DNS_RESOLVER) by enabling
CONFIG_WIFI_ESP_AT_CIPDINFO_USE (AT+CIPDINFO) automatically to get
peer ip-address and port, required by CONFIG_DNS_RESOLVER.

Signed-off-by: Chun-Chieh Li <ccli8@nuvoton.com>