mka: change how make is called

in some environments make -j N xxx results in compiling target 'N' instead of 'xxx'
make -jN xxx will always make 'xxx' with N number of threads
Signed-off-by: Arnav Gupta <championswimmer@gmail.com>

Change-Id: I77f17c9286a5ef1d61163d8f978900fb4c24e2e7