package/connman: fix legacy wpa_supplicant dbus select

package/connman: fix legacy wpa_supplicant dbus select

Remove '_NEW' from 'select BR2_PACKAGE_WPA_SUPPLICANT_DBUS_NEW' in
Config.in.

Wpa_supplicant dbus support option has been renamed from
BR2_PACKAGE_WPA_SUPPLICANT_DBUS_NEW to BR2_PACKAGE_WPA_SUPPLICANT_DBUS
in the bump to v2.9 (f2ffdbee2aca0ca2bde469475c180d60cb934beb).
While connman package, which depends on wpa_supplicant, has not been
updated.

This patch will fix legacy build error.

Signed-off-by: Thuan Ho <sandwichdoge@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>