drivers: wifi: Support for forced Passive scan

Default scan mode is set as Active scan. User can force passive
scan from Kconfig or from shell using 'passive' option.
Once set it will override regulatory settings and forces all channels
to be passive. Use the scan type param to decide active/passive
scan.

Signed-off-by: Ajay Parida <ajay.parida@nordicsemi.no>

drivers/wifi/nrf700x/zephyr/src/zephyr_wifi_mgmt.c

@@ -115,7 +115,7 @@ int wifi_nrf_disp_scan_zep(const struct device *dev, struct wifi_scan_params *pa
  scan_info.scan_mode = AUTO_SCAN;
  scan_info.scan_reason = SCAN_DISPLAY;
 
- if (!vif_ctx_zep->passive_scan) {
+ if (params->scan_type == WIFI_SCAN_TYPE_ACTIVE) {
  /* Wildcard SSID to trigger active scan */
  scan_info.scan_params.num_scan_ssids = 1;
  }