InputMapper: use a reference for InputDeviceInfo parameter

This makes the code a bit safer, especially since we never check for
this parameter being null.

Bug: 245989146
Test: atest inputflinger_tests
Test: dump motion ranges from a test app, check they're still there
Change-Id: I2754e57c8b261f86ad69891098c9762b96e9ec55
diff --git a/services/inputflinger/reader/mapper/InputMapper.cpp b/services/inputflinger/reader/mapper/InputMapper.cpp
index ba2ea99..9cf3696 100644
--- a/services/inputflinger/reader/mapper/InputMapper.cpp
+++ b/services/inputflinger/reader/mapper/InputMapper.cpp
@@ -29,8 +29,8 @@
 
 InputMapper::~InputMapper() {}
 
-void InputMapper::populateDeviceInfo(InputDeviceInfo* info) {
-    info->addSource(getSources());
+void InputMapper::populateDeviceInfo(InputDeviceInfo& info) {
+    info.addSource(getSources());
 }
 
 void InputMapper::dump(std::string& dump) {}