Replace NOP with actual operations to test inline.h compilation

test/system/test_compilation/inline.h

@@ -1,14 +1,19 @@
 
 static inline void dummy_func_0(void) {
-	//NOP
+	return 5;
 }
 
-inline static void dummy_func_1(void) {
-	//NOP
+inline static void dummy_func_1(int a) {
+	int a = dummy_func_0();
+	int b = 10;
+
+	return a + b;
 }
 
-void inline static dummy_func_2(void) {
-	//NOP
+void inline static dummy_func_2(int a, char b, float c) {
+	c += 3.14;
+	b -= 32;
+	return a + (int)(b) + c;
 }
 
 void dummy_normal_func(int a);