common: modify usb configuration in FFBM

Change usb interface to "diag,adb" and remove usb serialnum
to fix port change issue.

Change-Id: I33b51df9405e4b8507c717915be9680daac67bf4

rootdir/etc/init.qcom.factory.sh

@@ -1,5 +1,5 @@
 #!/system/bin/sh
-# Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
+# Copyright (c) 2009-2014, The Linux Foundation. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
@@ -233,6 +233,16 @@
 # Set this property so surfaceflinger is not started by system_init
     setprop system_init.startsurfaceflinger 0
 
+# Configurate USB in FFBM mode, two big change for USB.
+# 1) Using diag,adb in FFBM mode, too many interface will cause
+#    problem in factory for multi-line test
+# 2) Not config usb serialnum. Using the default value:"0123456789ABCDEF"
+#    Keep the USB serialnum no change for devices. this fix the problem
+#    of port change for various devices.
+chown -h root.system /sys/devices/platform/msm_hsusb/gadget/wakeup
+chmod -h 220 /sys/devices/platform/msm_hsusb/gadget/wakeup
+setprop persist.sys.usb.config diag,adb
+
 # Start the following services needed for fftm
     start logd
     start config_bluetooth
@@ -243,7 +253,6 @@
     start qcom-c_main-sh
     start irsc_util
     start qcamerasvr
-    start qcom-usb-sh
     start qcomsysd
     start ptt_ffbm
     start ftm_ffbm