sw:vec_iree: Add memory usage log on simple_vec_mul sample
Print memory usage in test_mlexecute
```
14:21:43.3816 [INFO] uart1: [output] KATA> test_mlexecute
14:21:43.4099 [WARNING] cpu2: The debug mode now has no effect - connect
a debugger, and switch to stepping mode.
14:21:43.5901 [INFO] cpu2: simprint: "[[ iree_hal_allocator_t memory
statistics ]]", 0 (0x0)
14:21:43.5908 [INFO] cpu2: simprint: "~ HOST_LOCAL: 0B peak
/ 0B allocated / 0B freed / 0B live", 0
(0x0)
14:21:43.5909 [INFO] cpu2: simprint: "DEVICE_LOCAL: 4096B peak /
4096B allocated / 4096B freed / 0B live", 0 (0x0)
14:21:43.5926 [INFO] cpu2: simprint: "INFO |simple_vec_mul finished
successfully", 0 (0x0)
14:21:43.5936 [INFO] cpu2: simprint: "main returned: ", 0 (0x0)
```
Due to b/195166567, only the first execution has the memory log printed
(IREE internal print mechanism uses fprintf).
Change-Id: I0d5f0abec085fcdf6604276c4c3692d6fa97084d
1 file changed