eal: allow combining -m and --no-huge

eal: allow combining -m and --no-huge

Needed to run as non-root but with higher memory allocations, and
removes a constraint on no-huge mode being limited to 64M. A usage
example is if running with file input with the pcap PMD, which can be
done as non-root after this patch via e.g.,

    ./test-dpdk --no-huge -m 1024 -l 0,1 -n3
		--vdev 'eth_pcap0,rx_pcap=eth-rx.pcap,tx_pcap=eth-tx.pcap'

Signed-off-by: Simon Kagstrom <simon.kagstrom@netinsight.net>
Signed-off-by: Johan Faltstrom <johan.faltstrom@netinsight.net>
Acked-by: David Marchand <david.marchand@6wind.com>