Use LLD as linker when using clang.

Signed-off-by: Deukhoofd <Deukhoofd@gmail.com>

CMakeLists.txt

@@ -33,6 +33,10 @@ if (SHARED)
     set(LIBTYPE SHARED)
 endif (SHARED)
 
+if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    add_link_options(-fuse-ld=lld)
+endif ()
+
 if (LEVEL_SIZE STREQUAL "8")
     add_definitions(-DLEVEL_U8)
     message(STATUS "Using level size of 8")