M154 Position Auto-Report (#18427)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/gcode/host/M115.cpp

@@ -82,6 +82,9 @@ void GcodeSuite::M115() {
     // Volumetric Extrusion (M200)
     cap_line(PSTR("VOLUMETRIC"), DISABLED(NO_VOLUMETRICS));
 
+    // AUTOREPORT_POS (M154)
+    cap_line(PSTR("AUTOREPORT_POS"), ENABLED(AUTO_REPORT_POSITION));
+
     // AUTOREPORT_TEMP (M155)
     cap_line(PSTR("AUTOREPORT_TEMP"), ENABLED(AUTO_REPORT_TEMPERATURES));