wpa-supplicant: update config for gnutls

wpa-supplicant: update config for gnutls

It fails to build wpa-supplicant with gnutls by setting PACKAGECONFIG
with 'gnutls':

| wpa_supplicant/../src/eap_common/eap_pwd_common.c:440: undefined
    reference to `crypto_ec_point_deinit'

Disable 3 configure options CONFIG_DPP, CONFIG_EAP_PWD and CONFIG_SAE to
make it work with gnutls.

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>