arch/stm32f0l0g0: add qencoder support

[raiden00pl]

Summary

Add qencoder support for stm32f0l0g0c0 and enable qe example for nucloe-c0 boards.
Ported for stm32

Impact

qencoder support for stm32-m0 chips

Testing

nucleo-c071rb with qe example from jumbo config:

nsh> qe
qe_main: Hardware initialized. Opening the encoder device: /dev/qe0
qe_main: Number of samples: 0
qe_main:   1. 0
qe_main:   2. 0
qe_main:   3. 0
qe_main:   4. 0
qe_main:   5. 0
qe_main:   6. 0
qe_main:   7. 0
qe_main:   8. 0
qe_main:   9. 0
qe_main:  10. 10
qe_main:  11. 16
qe_main:  12. 20
qe_main:  13. 20
qe_main:  14. 26
qe_main:  15. 40
qe_main:  16. 42
qe_main:  17. 42
qe_main:  18. 53
qe_main:  19. 54
qe_main:  20. 54
qe_main:  21. 43
qe_main:  22. 37
qe_main:  23. 37
qe_main:  24. 37
qe_main:  25. 23
qe_main:  26. 21
qe_main:  27. 21
qe_main:  28. 20
qe_main:  29. 2
qe_main:  30. 1
qe_main:  31. 0
qe_main:  32. 0
qe_main:  33. 0
qe_main:  34. 0
qe_main:  35. 0
qe_main:  36. 0
qe_main:  37. 0
qe_main:  38. 0
qe_main:  39. 0
qe_main:  40. 0
qe_main:  41. 0