healthd: Add handling for "Calibration required" battery health.

This string was added to sysfs fairly recently. It indicates that
re-calibration is needed, which we've already added an indicator for via
the INCONSISTENT health status.

Bug: 300585313
Test: m
Change-Id: I9594523e509ad94480ad13f489eee6d1c0a75e7e

healthd/BatteryMonitor.cpp

@@ -220,6 +220,7 @@ BatteryHealth getBatteryHealth(const char* status) {
             {"Warm", BatteryHealth::GOOD},
             {"Cool", BatteryHealth::GOOD},
             {"Hot", BatteryHealth::OVERHEAT},
+            {"Calibration required", BatteryHealth::INCONSISTENT},
             {NULL, BatteryHealth::UNKNOWN},
     };