Move RGBLIGHT_HUE/SAT/VAL_STEP to data driven (#21292)

Co-authored-by: Nick Brassel <nick@tzarc.org>

keyboards/lz/erghost/config.h

@@ -38,9 +38,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DIODE_DIRECTION ROW2COL
 
 #ifdef RGBLIGHT_ENABLE
-#define RGBLIGHT_HUE_STEP 8
-#define RGBLIGHT_SAT_STEP 8
-#define RGBLIGHT_VAL_STEP 8
 #    define RGBLIGHT_EFFECT_STATIC_LIGHT
 #    define RGBLIGHT_EFFECT_BREATHING
 #    define RGBLIGHT_EFFECT_RAINBOW_MOOD

keyboards/lz/erghost/info.json

@@ -13,6 +13,8 @@
         "breathing": true
     },
     "rgblight": {
+        "saturation_steps": 8,
+        "brightness_steps": 8,
         "led_count": 28,
         "sleep": true
     },