Improve/clean-up dissambled output format

Now the instruction (hex) and disassembled code will appear on one line
next to each other and the bytes are no longer printed with Python
specific formatting (not wrapped in b''). This results in a much cleaner
looking output.

Example output:

40008072  MOVE r0, 4
010000d0  LD r1, r0, 0

tools/disassemble.py

@@ -162,20 +162,24 @@ def chunk_into_words(code, bytes_per_word, byteorder):
     return words
 
 
-def decode_instruction_and_print(i, verbose=False):
-    print(ubinascii.hexlify(i.to_bytes(4, 'little')))
+def print_code_line(i, asm):
+    lineformat = '{0}  {1}'
+    hex = ubinascii.hexlify(i.to_bytes(4, 'little'))
+    print(lineformat.format(hex.decode('utf-8'), asm))
+
 
+def decode_instruction_and_print(i, verbose=False):
     try:
         ins, name = decode_instruction(i)
     except Exception as e:
-        print(e)
+        print_code_line(i, e)
         return
 
-    print(name)
+    print_code_line(i, name)
 
     if verbose:
         for field, val, extra in get_instruction_fields(ins):
-            print("  {:10} = {:3}{}".format(field, val, extra))
+            print("           {:10} = {:3}{}".format(field, val, extra))
 
 
 def disassemble_manually(byte_sequence_string, verbose=False):