SDL: Print the gamepad player index when opening a gamepad

SDL Commits
1 
From 445f08a0fba49562498b64fc28faa22dd690aeaf Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 9 Dec 2023 21:00:11 -0800
Subject: [PATCH] Print the gamepad player index when opening a gamepad

---
 test/testcontroller.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/testcontroller.c b/test/testcontroller.c
index f6d406e01fcb..a18bb0b06622 100644
--- a/test/testcontroller.c
+++ b/test/testcontroller.c
@@ -995,6 +995,10 @@ static void HandleGamepadAdded(SDL_JoystickID id, SDL_bool verbose)
             if (SDL_GamepadHasRumbleTriggers(gamepad)) {
                 SDL_Log("Trigger rumble supported");
             }
+
+            if (SDL_GetGamepadPlayerIndex(gamepad) >= 0) {
+                SDL_Log("Player index: %d\n", SDL_GetGamepadPlayerIndex(gamepad));
+            }
         }
 
         for (i = 0; i < SDL_arraysize(sensors); ++i) {