qcacld-3.0: Update 2g vht20 cfg by target capability

Only when F/W indicates 2g vht20 supported and ini config
gEnableVhtFor24GHzBand=1, 2g vht20 can be enabled.

Steps:
For chips wmi_service_ext_msg supported:

1. hdd_component_psoc_open->mlme_cfg_on_psoc_enable->
	mlme_init_vht_cap_cfg, read and save ini cfg:
	gEnableVhtFor24GHzBand.
2. WMI_SERVICE_READY_EXT_EVENT indicates 2g vht20 capability by
	mac_phy_caps->vht_cap_info_2G.
3. init_deinit_populate_mac_phy_capability calls
	extract_mac_phy_cap_service_ready_ext_tlv
	to extract vht_cap_info_2G, and set to
	psoc->tgt_if_handle->info.mac_phy_cap.
4. hdd_update_tgt_cfg->hdd_update_vhtcap_2g->
	wma_get_caps_for_phyidx_hwmode, get target capability,
	and combine ini cfg, update 2g vht20 cfg in mlme.

For chips wmi_service_ext_msg unsupported:

1. hdd_component_psoc_open->mlme_cfg_on_psoc_enable->
	mlme_init_vht_cap_cfg, read and save ini cfg:
	gEnableVhtFor24GHzBand.
2. WMI_SERVICE_READY_EVENT indicates 2g vht20 capability by
	hal_reg_capabilities-> wireless_modes
	REGDMN_MODE_11AC_VHT20_2G bit.
3. init_deinit_populate_phy_reg_cap calls wmi_extract_hal_reg_cap
	to extract hal_reg_capabilities, and set to
	regulatory component by ucfg_reg_set_hal_reg_cap, saved
	in wlan_regulatory_psoc_priv_obj->reg_cap.
4. hdd_update_tgt_cfg->hdd_update_vhtcap_2g, get and target
	capability and combine ini cfg, update 2g vht20 cfg in
	mlme.

Change-Id: Id4f2edd129bb1eefec3e39b4246c5f52b2b4124a
CRs-Fixed: 2384842

mlme/dispatcher/inc/wlan_mlme_ucfg_api.h

@@ -2314,12 +2314,9 @@ ucfg_mlme_get_vht_enable_gid(struct wlan_objmgr_psoc *psoc, bool *value)
 }
 
 /**
- * ucfg_mlme_get_vht_for_24ghz() - Enables/disables vht for 24ghz
+ * ucfg_mlme_get_vht_for_24ghz() - Get mlme cfg of vht for 24ghz
  * @psoc: psoc context
- * @value: data to be set
- *
- * Inline UCFG API to be used by HDD/OSIF callers to get the
- * ignore_peer_ht_opmode flag value
+ * @value: data to get
  *
  * Return: QDF_STATUS_SUCCESS or QDF_STATUS_FAILURE
  */
@@ -2334,9 +2331,6 @@ ucfg_mlme_get_vht_for_24ghz(struct wlan_objmgr_psoc *psoc, bool *value)
  * @psoc: psoc context
  * @value: data to be set
  *
- * Inline UCFG API to be used by HDD/OSIF callers to set the
- * ignore_peer_ht_opmode flag value
- *
  * Return: QDF_STATUS_SUCCESS or QDF_STATUS_FAILURE
  */
 static inline QDF_STATUS
@@ -2346,13 +2340,10 @@ ucfg_mlme_set_vht_for_24ghz(struct wlan_objmgr_psoc *psoc, bool value)
 }
 
 /**
- * ucfg_mlme_get_vendor_vht_for_24ghz() - Enables/disables vendor vht for 24ghz
+ * ucfg_mlme_get_vendor_vht_for_24ghz() - Get mlme cfg of vendor vht for 24ghz
  * @psoc: psoc context
  * @value: data to be set
  *
- * Inline UCFG API to be used by HDD/OSIF callers to get the
- * ignore_peer_ht_opmode flag value
- *
  * Return: QDF_STATUS_SUCCESS or QDF_STATUS_FAILURE
  */
 static inline QDF_STATUS