Fix absence of reference for type parameters

idea/testData/resolve/references/GenericFunctionParameter.kt

@@ -0,0 +1,10 @@
+package testing
+
+fun <T> someFun() {
+    fun innerFun(a: <caret>T) {
+
+    }
+}
+
+// REF: T
+

idea/testData/resolve/references/GenericTypeInFunctionParameter.kt

@@ -0,0 +1,7 @@
+class A<X> {
+    fun foo(a: <caret>X) {
+
+    }
+}
+
+// REF: X

idea/testData/resolve/references/InMethodParameter.kt

@@ -0,0 +1,9 @@
+package test
+
+class A
+
+class Test {
+    fun some(a: <caret>A) = 12
+}
+
+// REF: (test).A