make usb.vhd if missing, fix clear behavior

code/kernel/ke_display.c

@@ -677,8 +677,11 @@ static KSTATUS KiDisplayClearLocked(uint32_t color) {
         return s;
     KiDisplayBeginDraw();
     s = KiDisplayFillRectNoCursor(0, 0, (int)mode.Width, (int)mode.Height, color);
-    if (KSUCCESS(s))
+    if (KSUCCESS(s)) {
         KiDisplayConsoleResetCellsLocked();
+        gConsoleX = 0;
+        gConsoleY = 0;
+    }
     KSTATUS ps = KiDisplayEndDraw();
     return KSUCCESS(s) ? ps : s;
 }