Use relative paths for panic.h

Avoids adding the main directory as an include path

src/modules/motion.cpp

@@ -1,5 +1,5 @@
 #include "motion.h"
-#include "panic.h"
+#include "../panic.h"
 
 // TODO: use proper timer abstraction
 #ifdef __AVR__

tests/unit/modules/motion/CMakeLists.txt

@@ -1,7 +1,5 @@
 # common include and source directories
-set(include_common ${CMAKE_SOURCE_DIR}/src/modules ${CMAKE_SOURCE_DIR}/src/hal
-                   ${CMAKE_SOURCE_DIR}/src
-    )
+set(include_common ${CMAKE_SOURCE_DIR}/src/modules ${CMAKE_SOURCE_DIR}/src/hal)
 set(source_common
     ${CMAKE_SOURCE_DIR}/src/modules/motion.cpp
     ${CMAKE_SOURCE_DIR}/src/modules/speed_table.cpp

tests/unit/modules/stubs/stub_panic.cpp

@@ -1,4 +1,4 @@
-#include "panic.h"
+#include "../panic.h"
 
 // For retrival during tests
 ErrorCode panic_code = ErrorCode::RUNNING;