added kernel libraries bindings and cleaned up todos

UsbSerial/UsbSerial.odin

@@ -1,8 +1,10 @@
 package usbserial
 
 import "core:c"
+import sce "../common"
 
 foreign import usbserial "system:SceUsbSerial_stub"
+foreign import usbserialkern "system:SceUsbSerialForDriver_stub"
 
 @(link_prefix = "sceUsbSerial")
 foreign usbserial {
@@ -76,3 +78,64 @@ foreign usbserial {
   */
   Recv :: proc(buffer: rawptr, max_len: c.uint, unk1: c.int, unk2: c.int) -> c.uint ---
 }
+
+foreign usbserialkern {
+  /**
+  * Activate USB serial device
+  *
+  * @return 0 on success, < 0 on error
+  *
+  * @note The user is responsible for making sure no other UDC driver is active. This activates UDC as a "PS Vita" Type D device.
+  */
+  ksceUsbSerialStart :: proc() -> c.int ---
+
+  /**
+  * Setup USB serial device
+  *
+  * @return 0 on success, < 0 on error
+  *
+  * @param unk Unknown
+  */
+  ksceUsbSerialSetup :: proc(unk: c.int) -> c.int ---
+
+  /**
+  * Get USB device status
+  *
+  * @return Returns 1 when serial port is open
+  */
+  ksceUsbSerialStatus :: proc() -> c.int ---
+
+  /**
+  * Close USB serial device
+  */
+  ksceUsbSerialClose :: proc() -> c.int ---
+
+  /**
+  * Get receive buffer length
+  *
+  * @return Returns length of USB rx buffer
+  */
+  ksceUsbSerialGetRecvBufferSize :: proc() -> c.uint ---
+
+  /**
+  * Send data
+  *
+  * @param[in] *buffer data to send over usb
+  * @param[in] len int len of serial buffer data
+  * @param unk1 Unknown
+  * @param unk2 Unknown
+  * @note max send length is 0x10000
+  */
+  ksceUsbSerialSend :: proc(buffer: rawptr, len: sce.Size, unk1: c.int, unk2: c.int) -> sce.Size ---
+
+  /**
+  * Receive Data
+  *
+  * @param[out] *buffer buffer for incoming data
+  * @param[in] max_len max data length to receive
+  * @param unk1 Unknown
+  * @param unk2 Unknown
+  * @note max recv length is 0x10000
+  */
+  ksceUsbSerialRecv :: proc(buffer: rawptr, max_len: sce.Size, unk1: c.int, unk2: c.int) -> sce.Size ---
+}