switch to logger (more POSIX)

Scripts/gadget.sh

@@ -12,17 +12,19 @@ fi
 
 # Is the dwc2 overlay installed?  Nothing will work if it isn't.
 if lsmod | grep -q "dwc2"; then
-    systemd-cat -t gadget.sh -p info echo "DWC2 module loaded, setting up OTG gadget serial and ethernet"
+    echo "DWC2 module loaded, setting up OTG gadget serial and ethernet" | logger -t $0 -p info
+    echo "DWC2 module loaded"
 else
-    systemd-cat -t gadget.sh -p warning echo "DWC2 module missing.  Aborting OTG setup."
+    echo "DWC2 module missing.  Aborting OTG setup." | logger -t $0 -p info
+    echo "DWC2 module missing"
     systemctl disable serial-getty@ttyGS0.service
     exit 1
 fi
 
-sudo modprobe libcomposite
+modprobe libcomposite
 cd /sys/kernel/config/usb_gadget
 if [ -d "MyGadget" ]; then
-    systemd-cat -t gadget.sh -p warning echo "MyGadget already exists.  Aborting OTG setup."
+    echo "MyGadget already exists.  Aborting OTG setup." | logger -t $0 -p info
     exit 1
 fi