Added a dummy sensor driver

include/SDL_config_minimal.h

@@ -64,6 +64,9 @@ typedef unsigned long uintptr_t;
 /* Enable the stub haptic driver (src/haptic/dummy/\*.c) */
 #define SDL_HAPTIC_DISABLED 1
 
+/* Enable the stub sensor driver (src/sensor/dummy/\*.c) */
+#define SDL_SENSOR_DISABLED 1
+
 /* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
 #define SDL_LOADSO_DISABLED 1