Move all include files to src/include

- 86Box's own headers go to /86box
- munt's public interface goes to /mt32emu
- all slirp headers go to /slirp (might want to consider using only its public inteface)
- single file headers from other projects go in include root

src/include/86box/usb.h

@@ -0,0 +1,41 @@
+/* Copyright holders: Melissa Goad
+   see COPYING for more details
+*/
+
+typedef struct
+{
+    uint8_t pid; //low 4 bits are the real pid, top 4 bits are just ~pid
+    uint8_t dev_addr;
+    uint8_t dev_endpoint;
+    int crc5;
+    uint16_t crc16;
+    uint8_t data[1024];
+    int len;
+    void* device;
+} usb_packet_t;
+
+typedef enum
+{
+    USB_DEV_TYPE_NONE = 0,
+    USB_DEV_TYPE_MOUSE,
+    USB_DEV_TYPE_TABLET,
+    USB_DEV_TYPE_KEYPAD,
+    USB_DEV_TYPE_DISK,
+    USB_DEV_TYPE_CDROM,
+    USB_DEV_TYPE_HUB,
+    USB_DEV_TYPE_PRINTER
+} usb_device_type_t;
+
+typedef enum
+{
+    USB_PID_TOKEN_STALL = 0x1e,
+    USB_PID_TOKEN_SETUP = 0x2d,
+    USB_PID_TOKEN_PRE = 0x3c,
+    USB_PID_TOKEN_DATA1 = 0x4b,
+    USB_PID_TOKEN_NAK = 0x5a,
+    USB_PID_TOKEN_IN = 0x69,
+    USB_PID_TOKEN_SOF = 0xa5,
+    USB_PID_TOKEN_DATA0 = 0xc3,
+    USB_PID_TOKEN_ACK = 0xd2,
+    USB_PID_TOKEN_OUT = 0xe1
+} usb_pid_type_t;