P2P: Consult driver capabilities before setting HE bit in GO's conf

P2P: Consult driver capabilities before setting HE bit in GO's conf

p2p_go_he could be set to 1 in the global config file while the device
might only has a VHT Wi-Fi NIC. Consult driver capabilities before
setting the HE bit for the GO's configuration so that latter AP
configuration does not fail due to wrong AP configuration, like
hostapd_get_oper_centr_freq_seg0_idx().

This config bit is checked and set in wpa_supplicant_conf_ap_ht() based
on a more recent commit 3459c54ac78b ("mesh: Add support for HE mode"),
Thus there is no need to override this bit specifically for P2P GO using
this older approach.

Signed-off-by: Jintao Lin <jintaolin@chromium.org>