add key type 9 (NFC) for ps service

libctru/include/3ds/services/ps.h

@@ -17,10 +17,11 @@ typedef enum
 	ps_KEYSLOT_31,
 	ps_KEYSLOT_38,
 	ps_KEYSLOT_32,
-	ps_KEYSLOT_39,
+	ps_KEYSLOT_39_DLP,
 	ps_KEYSLOT_2E,
 	ps_KEYSLOT_INVALID,
-	ps_KEYSLOT_36
+	ps_KEYSLOT_36,
+	ps_KEYSLOT_39_NFC
 } ps_aes_keytypes;
 
 /*
@@ -73,4 +74,4 @@ About: Gets a 32bit device id, it's used for some key slot inits
 
   device_id		ptr to where the device id is written to
 */
-Result PS_GetDeviceId(u32* device_id);
+Result PS_GetDeviceId(u32* device_id);