tests: lib: cmsis_dsp: matrix: binary_q15 reorder test to fit 128k ram

tests/lib/cmsis_dsp/matrix/ with config:
   * libraries.cmsis_dsp.matrix.binary_q15
128k is sufficient if tests steps are reordered,
otherwise system run out of memory.
Biggest chunk first for better malloc chunk reusability.
Tested on nucleo_f207zg

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>