Use SBI macro

Marlin/stepper.cpp

         #if ENABLED(Z_MIN_PROBE_ENDSTOP) && DISABLED(Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN) && ENABLED(HAS_Z_MIN_PROBE)
           if (z_probe_is_active) {
             UPDATE_ENDSTOP(Z, MIN_PROBE);
-            if (TEST_ENDSTOP(Z_MIN_PROBE)) endstop_hit_bits |= _BV(Z_MIN_PROBE);
+            if (TEST_ENDSTOP(Z_MIN_PROBE)) SBI(endstop_hit_bits, Z_MIN_PROBE);
           }
         #endif
       }