feat(core): add reset state on display clear on model R. Added to rest of the models as noop.

core/embed/extmod/modtrezorui/display-stm32_1.h

@@ -89,6 +89,8 @@ void PIXELDATA(uint16_t c) {
   }
 }
 
+static void display_reset_state() {}
+
 void PIXELDATA_DIRTY() { pixeldata_dirty = true; }
 
 static void display_set_window(uint16_t x0, uint16_t y0, uint16_t x1,

core/embed/extmod/modtrezorui/display-stm32_T.h

@@ -91,6 +91,8 @@ static uint32_t display_identify(void) {
   return id;
 }
 
+static void display_reset_state() {}
+
 static void __attribute__((unused)) display_sleep(void) {
   uint32_t id = display_identify();
   if ((id == DISPLAY_ID_ILI9341V) || (id == DISPLAY_ID_GC9307) ||

core/embed/extmod/modtrezorui/display-unix.h

@@ -98,6 +98,8 @@ void PIXELDATA(uint16_t c) {
   }
 }
 
+static void display_reset_state() {}
+
 void display_init_seq(void) {}
 
 void display_deinit(void) {

core/embed/extmod/modtrezorui/display.c

@@ -158,6 +158,9 @@ static inline void clamp_coords(int x, int y, int w, int h, int *x0, int *y0,
 
 void display_clear(void) {
   const int saved_orientation = DISPLAY_ORIENTATION;
+
+  display_reset_state();
+
   // set MADCTL first so that we can set the window correctly next
   display_orientation(0);
   // address the complete frame memory