SDL: testcamera: Log the camera backend in use.

SDL Commits
1 
From e484182765eb3a734e4fdc263671cf1abe832b90 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Fri, 3 Jan 2025 03:46:22 -0500
Subject: [PATCH] testcamera: Log the camera backend in use.

---
 test/testcamera.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/test/testcamera.c b/test/testcamera.c
index da84cd2823337..f83347f27e55e 100644
--- a/test/testcamera.c
+++ b/test/testcamera.c
@@ -124,6 +124,8 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
         return SDL_APP_FAILURE;
     }
 
+    SDL_Log("Using SDL camera driver: %s", SDL_GetCurrentCameraDriver());
+
     SDL_CameraID *devices = SDL_GetCameras(&devcount);
     if (!devices) {
         SDL_Log("SDL_GetCameras failed: %s", SDL_GetError());