touch_ms followup

Marlin/src/lcd/tft/touch.cpp

 touch_control_t Touch::controls[];
 touch_control_t *Touch::current_control;
 uint16_t Touch::controls_count;
-millis_t Touch::last_touch_ms = 0;
-millis_t Touch::time_to_hold;
-millis_t Touch::repeat_delay;
-millis_t Touch::touch_time;
+millis_t Touch::last_touch_ms = 0,
+         Touch::time_to_hold,
+         Touch::repeat_delay,
+         Touch::touch_time;
 TouchControlType  Touch::touch_control_type = NONE;
 touch_calibration_t Touch::calibration;
 #if ENABLED(TOUCH_SCREEN_CALIBRATION)

Marlin/src/lcd/tft/touch.h

     static touch_control_t *current_control;
     static uint16_t controls_count;
 
-    static millis_t now;
-    static millis_t time_to_hold;
-    static millis_t repeat_delay;
-    static millis_t touch_time;
+    static millis_t last_touch_ms, time_to_hold, repeat_delay, touch_time;
     static TouchControlType touch_control_type;
 
     static inline bool get_point(int16_t *x, int16_t *y);