prima: Soft AP is not beaconing in 2.4Ghz mode

Set HT40+ support capability bit in whipy from the
driver in order to start SAP in 2.4Ghz mode.

Change-Id: I2de5787b745668e92e2552178b204803d00a1d94
CRs-Fixed: 2313059
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index c7b3e2e..4bed869 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -304,7 +304,8 @@
     .ht_cap.cap            =  IEEE80211_HT_CAP_SGI_20
                             | IEEE80211_HT_CAP_GRN_FLD
                             | IEEE80211_HT_CAP_DSSSCCK40
-                            | IEEE80211_HT_CAP_LSIG_TXOP_PROT,
+                            | IEEE80211_HT_CAP_LSIG_TXOP_PROT
+                            | IEEE80211_HT_CAP_SUP_WIDTH_20_40,
     .ht_cap.ampdu_factor   = IEEE80211_HT_MAX_AMPDU_64K,
     .ht_cap.ampdu_density  = IEEE80211_HT_MPDU_DENSITY_16,
     .ht_cap.mcs.rx_mask    = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },