Parse LED mappings in keylayout files

Change-Id: I6bc3760341868015f054d9866e2616a312da94e0
diff --git a/include/input/Keyboard.h b/include/input/Keyboard.h
index 846cb0c..25b2f07 100644
--- a/include/input/Keyboard.h
+++ b/include/input/Keyboard.h
@@ -94,18 +94,24 @@
 extern uint32_t getKeyFlagByLabel(const char* label);
 
 /**
- * Gets a axis by its short form label, eg. "X".
+ * Gets an axis by its short form label, eg. "X".
  * Returns -1 if unknown.
  */
 extern int32_t getAxisByLabel(const char* label);
 
 /**
- * Gets a axis label by its id.
+ * Gets an axis label by its id.
  * Returns NULL if unknown.
  */
 extern const char* getAxisLabel(int32_t axisId);
 
 /**
+ * Gets an LED by its short form label, eg. "CAPS_LOCK".
+ * Returns -1 if unknown.
+ */
+extern int32_t getLedByLabel(const char* label);
+
+/**
  * Updates a meta state field when a key is pressed or released.
  */
 extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState);