Update micropython

The current version of micropython in tests/micropython.bin is ancient.
Bug #135 points out that more recent versions are much smaller and they
also handle restart when ctrl+D is pressed.

Save all three versions of the file (elf, bin and hex) in micropython/

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>

scripts/test_micropython.py

@@ -12,7 +12,7 @@ tempdir = tempfile.TemporaryDirectory()
 cwd = os.getcwd()
 os.chdir(tempdir.name)
 
-copyfile(os.path.join(cwd, 'tests/micropython.bin'),
+copyfile(os.path.join(cwd, 'micropython/firmware.bin'),
         os.path.join(tempdir.name, 'main_ram.bin'))
 
 cmd = [ os.path.join(cwd, './core_tb') ]

scripts/test_micropython_long.py

@@ -12,7 +12,7 @@ tempdir = tempfile.TemporaryDirectory()
 cwd = os.getcwd()
 os.chdir(tempdir.name)
 
-copyfile(os.path.join(cwd, 'tests/micropython.bin'),
+copyfile(os.path.join(cwd, 'micropython/firmware.bin'),
         os.path.join(tempdir.name, 'main_ram.bin'))
 
 cmd = [ os.path.join(cwd, './core_tb') ]