vfx: update defaults

Author: redchenjs

main/inc/user/vfx.h

@@ -15,16 +15,16 @@
 
 #define FFT_N 128
 
-#define DEFAULT_VFX_MODE        0x0F
-#define DEFAULT_VFX_SCALE_FACTOR    192
+#define DEFAULT_VFX_MODE 0x0F
+#define DEFAULT_VFX_SCALE_FACTOR 0xFF
 
 #ifndef CONFIG_VFX_OUTPUT_CUBE0414
     #define DEFAULT_VFX_LIGHTNESS 0x00FF
 #else
     #define DEFAULT_VFX_LIGHTNESS 0x006F
 #endif
 
-#define DEFAULT_VFX_BACKLIGHT   255
+#define DEFAULT_VFX_BACKLIGHT 0xFF
 
 struct vfx_conf {
     uint8_t mode;