qcacld-3.0: Fix channel width logs when updating phymode

In wlan_hdd_update_phymode() there are two separate calls to
ucfg_mlme_get_vht_channel_width(). In both cases the return status is
checked, and in case of error the following messages is logged:
  "Failed to set channel_width"

Since ucfg_mlme_get_vht_channel_width() is a "getter" and not a
"setter" change the log to:
  "Failed to get channel_width"

Change-Id: Ifed249e78e4a64d76eae9310da42ee490756337e
CRs-Fixed: 2338478
1 file changed