Add name for hid device; implement detect

== DETAILS

- detect() methods in device_* files now check for VID/PID
  instead of just returning false
- add "name" field on hid device, mainly for logging purposes

== TESTING
Verified my WiiU GC adapter detected properly

input/common/hid/device_ds3.c

@@ -18,9 +18,10 @@
 
 static bool ds3_detect(uint16_t vendor_id, uint16_t product_id)
 {
-  return false;
+  return vendor_id == VID_SONY && product_id == PID_SONY_DS3;
 }
 
 hid_device_t ds3_hid_device = {
-  ds3_detect
+  ds3_detect,
+  "Sony DualShock 3"
 };

input/common/hid/device_ds4.c

@@ -18,9 +18,10 @@
 
 static bool ds4_detect(uint16_t vendor_id, uint16_t product_id)
 {
-  return false;
+  return vendor_id == VID_SONY && product_id == PID_SONY_DS4;
 }
 
 hid_device_t ds4_hid_device = {
-  ds4_detect
+  ds4_detect,
+  "Sony DualShock 4"
 };

input/common/hid/device_wiiu_gca.c

@@ -17,9 +17,10 @@
 #include "hid_device_driver.h"
 
 static bool wiiu_gca_detect(uint16_t vendor_id, uint16_t product_id) {
-  return false;
+  return vendor_id == VID_NINTENDO && product_id == PID_NINTENDO_GCA;
 }
 
 hid_device_t wiiu_gca_hid_device = {
-  wiiu_gca_detect
+  wiiu_gca_detect,
+  "Wii U Gamecube Adapter"
 };

input/common/hid/hid_device_driver.h

@@ -18,9 +18,11 @@
 #define HID_DEVICE_DRIVER__H
 
 #include "../../input_driver.h"
+#include "../../connect/joypad_connection.h"
 
 typedef struct hid_device {
   bool (*detect)(uint16_t vid, uint16_t pid);
+  const char *name;
 } hid_device_t;
 
 extern hid_device_t wiiu_gca_hid_device;

wiiu/input/wiiu_hid.c

@@ -656,6 +656,7 @@ static wiiu_attach_event *new_attach_event(HIDDevice *device)
         device->vid, device->pid);
       return NULL;
    }
+   RARCH_LOG("[hid]: Found HID device driver: %s\n", driver->name);
    wiiu_attach_event *event = alloc_zeroed(4, sizeof(wiiu_attach_event));
    if(!event)
       return NULL;