reduce reported current so we can use with iOS for gboard. no computer actually cares about this number, current isnt throttled or anything.

Author: ladyada

cores/arduino/USB/USBCore.h

@@ -258,7 +258,7 @@ _Pragma("pack()")
  *    idVendor, idProduct, bcdDevice, iManufacturer, iProduct, iSerialNumber, bNumConfigurations */
 
 #define D_CONFIG(_totalLength,_interfaces) \
-	{ 9, 2, _totalLength,_interfaces, 1, 0, USB_CONFIG_BUS_POWERED | USB_CONFIG_REMOTE_WAKEUP, USB_CONFIG_POWER_MA(500) }
+	{ 9, 2, _totalLength,_interfaces, 1, 0, USB_CONFIG_BUS_POWERED | USB_CONFIG_REMOTE_WAKEUP, USB_CONFIG_POWER_MA(100) }
 /* Table 9-10. Standard Configuration Descriptor
  * bLength, bDescriptorType, wTotalLength, bNumInterfaces, bConfigurationValue, iConfiguration
  * bmAttributes, bMaxPower */