CMSIS-NN: Reduced stack/heap config for CIFAR-10 example targeting Cortex-M4.

It was out of sync with other targets and with default memory settings. That
caused linking to fail.

Change-Id: I76466c56295a71bb3adb205cbfad9fce8230f975

Author: JonatanAntoni

CMSIS/NN/Examples/ARM/arm_nn_examples/cifar10/RTE/Device/ARMCM4_FP/startup_ARMCM4.s

@@ -32,7 +32,7 @@
 ;   <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Stack_Size      EQU     0x00000800
+Stack_Size      EQU     0x00000400
 
                 AREA    STACK, NOINIT, READWRITE, ALIGN=3
 Stack_Mem       SPACE   Stack_Size
@@ -43,7 +43,7 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Heap_Size       EQU     0x00080000
+Heap_Size       EQU     0x00000C00
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base