[Lab-2] Possible Solution

[Description]
- Copy Possible Solution(P.174) to file

Signed-off-by: C.W. Hsiao <cwhsiao.lionel@gmail.com>
[Lab-1] Makefile: Update qemu target by for loop

[DESCRIPTION]
- Replace Copy&Paste with for loop in qemu target

Signed-off-by: C.W. Hsiao <cwhsiao.lionel@gmail.com>
[Lab-1] Add non-recursive fibonacci function

[DESCRIPTION]
- Reply the suggestion in hackpad, study how to get fibonacci sequence by non-recursive function.
Ref: https://embedded2014.hackpad.com/8f6dpDHL0mP

Signed-off-by: C.W. Hsiao <cwhsiao.lionel@gmail.com>