Avoid UI freezing when reading battery capacity/status

Reading battery capacity and status could fail and end up
with timeout after 5s for some input devices, for example:
8BitDo SN30 Pro+ gamepad.

Before reading those items, it would be better to release
`mLock` so that other threads could run.

Bug: 244088945
Test: Manually verified no UI freezing when calling
  `inputDevice.batteryState.capacity` or
  `inputDevice.batteryState.status`

Change-Id: Ibb6b8c999b7fd4fe7fbcc57264a1fe6ad74903dc
diff --git a/services/inputflinger/reader/controller/PeripheralController.h b/services/inputflinger/reader/controller/PeripheralController.h
index b1bc8c7..ac951eb 100644
--- a/services/inputflinger/reader/controller/PeripheralController.h
+++ b/services/inputflinger/reader/controller/PeripheralController.h
@@ -31,6 +31,7 @@
     explicit PeripheralController(InputDeviceContext& deviceContext);
     ~PeripheralController() override;
 
+    int32_t getEventHubId() const override;
     void populateDeviceInfo(InputDeviceInfo* deviceInfo) override;
     void dump(std::string& dump) override;
     bool setLightColor(int32_t lightId, int32_t color) override;
@@ -43,6 +44,7 @@
 private:
     inline int32_t getDeviceId() { return mDeviceContext.getId(); }
     inline InputDeviceContext& getDeviceContext() { return mDeviceContext; }
+    inline InputDeviceContext& getDeviceContext() const { return mDeviceContext; }
 
     InputDeviceContext& mDeviceContext;
     void configureLights();