update bsp build.sh fix SYSTYPE bug

guowenxue

2021-12-29 7b4034eaee2391e5347b9470b09dfc5a3f2ab856

 bsp/rootfs/files/wpa_supplicant.conf

@@ -3,7 +3,7 @@
update_config=1
 
network={
 scan_ssid=1
 ssid=""   
 psk=""
    scan_ssid=1
    ssid=""
    psk=""
}