add sleeps to let kernel load and set up devices

add powersave off as nexmon suggests
pick auto mode more instead of manu

builder/data/usr/bin/pwnlib

@@ -25,15 +25,20 @@ reload_brcm() {
   if ! modprobe -r brcmfmac; then
     return 1
   fi
+  sleep 1
   if ! modprobe brcmfmac; then
     return 1
   fi
+  sleep 2
+  iw dev wlan0 set power_save off
   return 0
 }
 
 # starts mon0
 start_monitor_interface() {
+  iw dev wlan0 set power_save off
   iw phy "$(iw phy | head -1 | cut -d" " -f2)" interface add mon0 type monitor
+  sleep 2
   ifconfig wlan0 down
   ifconfig mon0 up
 }
@@ -69,12 +74,12 @@ is_auto_mode() {
 
   # if usb0 is up, we're in MANU
   if is_interface_up usb0; then
-    return 1
+    return 0
   fi
 
   # if eth0 is up (for other boards), we're in MANU
   if is_interface_up eth0; then
-    return 1
+    return 0
   fi
 
   # no override, but none of the interfaces is up -> AUTO