event/cnxk: add options for timer chunk size and rings

event/cnxk: add options for timer chunk size and rings

Add devargs to control default chunk size and max numbers of
timer rings to attach to a given RVU PF.

Example:
	--dev "0002:1e:00.0,tim_chnk_slots=1024"
	--dev "0002:1e:00.0,tim_rings_lmt=4"

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
Signed-off-by: Shijith Thotton <sthotton@marvell.com>