Link with lld if possible (for build time reasons)

ToolchainNX64.cmake

@@ -33,6 +33,9 @@ set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -x assembler-with-cpp ${ARCH}")
 
 add_compile_options(-fPIC -stdlib=libc++ -mno-implicit-float)
 add_link_options(-B ${DEVKITA64}/bin -fPIC -Wl,-Bsymbolic-functions -shared -nodefaultlibs)
+if(EXISTS "${DEVKITA64}/bin/ld.lld")
+    add_link_options(-fuse-ld=lld -Wl,-z,notext)
+endif()
 add_definitions(-D SWITCH -D __DEVKITA64__ -D __ELF__)
 add_definitions(-D NNSDK)
 add_definitions(-D MATCHING_HACK_NX_CLANG)