Disable the DRM master hooks when EGLFS isn't used

app/masterhook_internal.c

@@ -31,6 +31,7 @@
 
 extern int g_QtDrmMasterFd;
 extern struct stat g_DrmMasterStat;
+extern bool g_DisableDrmHooks;
 
 #define MAX_SDL_FD_COUNT 8
 int g_SdlDrmMasterFds[MAX_SDL_FD_COUNT];
@@ -114,6 +115,10 @@ int openHook(typeof(open) *real_open, typeof(close) *real_close, const char *pat
         fd = real_open(pathname, flags);
     }
 
+    if (g_DisableDrmHooks) {
+        return fd;
+    }
+
     // If the file was successfully opened and we have a DRM master FD,
     // check if the FD we just opened is a DRM device.
     if (fd >= 0 && g_QtDrmMasterFd != -1) {