fix couple issues with usb firmware

lib/efm8_usb/Readme.txt

@@ -0,0 +1,56 @@
+-------------------------------------------------------------------------------
+ Readme.txt
+-------------------------------------------------------------------------------
+
+Copyright 2014 Silicon Laboratories, Inc.
+http://developer.silabs.com/legal/version/v11/Silicon_Labs_Software_License_Agreement.txt
+
+Program Description:
+-------------------
+
+This is the generic EFM8 USB Firmware Library. Please see the EFM8 Libraries 
+Documentation for more information (/doc/EFM8/software/Lib/index.html).
+
+Known Issues and Limitations:
+----------------------------
+
+1) The library does not reset its Data Toggle after receiving a SET_INTERFACE 
+   request.
+
+Target and Tool Chain Information:
+---------------------------------
+
+Target:         EFM8UB1, EFM8UB2, C8051F320/1, C8051F326/7, C8051F34x, C8051F38x
+Tool chain:     Keil
+
+File List:
+---------
+
+/inc/efm8_usb.h
+/src/efm8_usbd.c
+/src/efm8_usbdch9.c
+/src/efm8_usbdep.c
+/src/efm8_usbdint.c
+
+Release Information:
+-------------------
+
+Version 1.0.0
+    - Initial release.
+
+Version 1.0.1
+    - Fixed bug in logic of remote wakeup feature where the device would 
+      attempt to wake the host before enabling its USB transceiver.
+    - Fixed bug where the device would stall the Data Phase instead of the 
+      Setup Phase when sending a procedural stall on Endpoint 0.
+    - Fixed bug where a bus-powered device would look at VBUS after a USB Reset
+      to determine if it should enter the Default or Attached State. VBUS is 
+      always present on a bus-powered device, so it should automatically enter 
+      the Default State.
+    - Removed code that generated a compiler warning when
+      USB_PWRSAVE_MODE_FASTWAKE was enabled.
+    - Improved documentation of USB_PWRSAVE_MODE_FASTWAKE feature.
+
+-------------------------------------------------------------------------------
+ End Of File
+-------------------------------------------------------------------------------