TIM2 is a 32-bit Timer/Counter with 4 Compare/Capture channels.

In this subproject, an 64 bit apriodic timer is created based on
TIM2 in which the overflow is managed automatically and the user
is able to set checkpoints (in terms of timer ticks) to fire IRQ.

An expected usecase is the use this driver as the context switch
tool for the kernel.
There might be some errors in which overflows/checkpoints are not
managed correctly that will be OK asap.

Signed-off-by: sasan_golchin <ahmad.golchin@mail.polimi.it>

Signed-off-by: sasan_golchin <ahmad.golchin@mail.polimi.it>
Signed-off-by: Terraneo Federico <fede.tft@miosix.org>