Add events for USB Device (#2449)

***NO_CI***

Author: josesimoes

src/CLR/Include/nanoCLR_Runtime.h

@@ -3392,6 +3392,8 @@ typedef enum Events
     Event_Radio             = 0x00000400,
     Event_Wifi_Station      = 0x00000800,
     Event_Bluetooth         = 0x00001000,
+    Event_UsbIn             = 0x00002000,
+    Event_UsbOut            = 0x00004000,
     Event_AppDomain         = 0x02000000,
     Event_Socket            = 0x20000000,
     Event_IdleCPU           = 0x40000000,

src/HAL/Include/nanoHAL_v2.h

@@ -61,6 +61,8 @@ typedef enum SLEEP_LEVEL
 #define SYSTEM_EVENT_FLAG_COM_OUT      0x00000002
 #define SYSTEM_EVENT_FLAG_STORAGE_IO   0x00000004
 #define SYSTEM_EVENT_FLAG_SYSTEM_TIMER 0x00000010
+#define SYSTEM_EVENT_FLAG_USB_IN       0x00000020
+#define SYSTEM_EVENT_FLAG_USB_OUT      0x00000040
 //#define SYSTEM_EVENT_FLAG_TIMER1                    0x00000020
 //#define SYSTEM_EVENT_FLAG_TIMER2                    0x00000040
 //#define SYSTEM_EVENT_FLAG_BUTTON                    0x00000080
@@ -108,9 +110,9 @@ typedef enum SLEEP_LEVEL
 #define EVENT_RADIO                 80
 #define EVENT_HIGH_RESOLUTION_TIMER 90
 #define EVENT_BLUETOOTH             100
-
-#define EVENT_TOUCH   120
-#define EVENT_GESTURE 130
+#define EVENT_USB                   110
+#define EVENT_TOUCH                 120
+#define EVENT_GESTURE               130
 
 #define PAL_EVENT_TOUCH 0x1
 #define PAL_EVENT_KEY   0x2