Fix Phantom sleep LED.

keyboard/phantom/config.h

@@ -39,6 +39,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Set 0 if need no debouncing */
 #define DEBOUNCE    7
 
+/* Set LED brightness 0-255.
+ * This have no effect if sleep LED is enabled. */
+#define LED_BRIGHTNESS  250
+
 /* key combination for command */
 #define IS_COMMAND() ( \
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \