net/axgbe: check max SIMD bitwidth
net/axgbe: check max SIMD bitwidth

When choosing a vector path to take, an extra condition must be
satisfied to ensure the max SIMD bitwidth allows for the CPU enabled
path.

Signed-off-by: Ciara Power <2dd8f648091a527a3f34edd30b226be01da76a0e@intel.com>
Acked-by: Amaranath Somalapuram <300831140693c4e27e706e25236aca001a1364b8@amd.com>

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