raw/ifpga: fix unintentional integer overflow
raw/ifpga: fix unintentional integer overflow

cast unsigned int ports_per_retimer, unsigned int nums_retimer,
unsigned int nums_fvl and unsigned int ports_per_fvl to uint64_t
before multiply operation, to avoid Unintentional integer overflow.

Coverity issue: 337924, 337926
Fixes: d1cd4eb2d48e ("raw/ifpga: support ipn3ke")
Cc: stable@dpdk.org

Signed-off-by: Andy Pei <495968cb2b3cf2ab5bd53dc54ba9a3450dc45709@intel.com>
Acked-by: Rosen Xu <8f603db01337dbfe2ce4743ebc0cdbcec6fa456f@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk