event/octeontx: validate events requested against available

event/octeontx: validate events requested against available

Validate events configured in ssopf against the total number of
events configured across all the RX/TIM event adapters.

Events available to ssopf can be reconfigured by passing the required
amount to kernel bootargs and are only limited by DRAM size.
Example:
	ssopf.max_events= 2097152

Cc: stable@dpdk.org
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>