controller/ble_ll_scan: For callouts number of ticks should be used

[vrahane]

• For callouts number of ticks are used, not an absolute value in the future.

BEFORE

001674 [ts=13078120us, mod=100 level=1] scan: completed scan procedure delta=1674
001676 [ts=13093744us, mod=100 level=1] scan: restarted scan procedure
004662 [ts=36421848us, mod=100 level=1] scan: completed scan procedure delta=2986
004664 [ts=36437472us, mod=100 level=1] scan: restarted scan procedure
010638 [ts=83109368us, mod=100 level=1] scan: completed scan procedure delta=5974
010640 [ts=83124992us, mod=100 level=1] scan: restarted scan procedure
022590 [ts=176484344us, mod=100 level=1] scan: completed scan procedure delta=11950
022592 [ts=176499968us, mod=100 level=1] scan: restarted scan procedure

AFTER

007634 [ts=59640584us, mod=100 level=1] scan: completed scan procedure, delta=1310
008946 [ts=69890568us, mod=100 level=1] scan: completed scan procedure, delta=1310
010258 [ts=80140616us, mod=100 level=1] scan: completed scan procedure, delta=1310
011570 [ts=90390600us, mod=100 level=1] scan: completed scan procedure, delta=1310
012882 [ts=100640584us, mod=100 level=1] scan: completed scan procedure, delta=1310
014194 [ts=110890568us, mod=100 level=1] scan: completed scan procedure, delta=1310
015506 [ts=121140616us, mod=100 level=1] scan: completed scan procedure, delta=1310
016818 [ts=131390600us, mod=100 level=1] scan: completed scan procedure, delta=1310
018130 [ts=141640584us, mod=100 level=1] scan: completed scan procedure, delta=1310

[rymanluk]

Indeed this looks like regression after #1007