igb: fix indentation of previous patchset
igb: fix indentation of previous patchset

There was an indentation error in commit d93c252e88f2b29a5
"convert to use of PMD_REGISTER_DRIVER and fix linking"

Signed-off-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

venkynv/dpdk-mirror,tsphillips/dpdk-fork,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,venkynv/dpdk-mirror,mixja/dpdk,tsphillips/dpdk-fork,msune/dpdk,venkynv/dpdk-mirror,msune/dpdk,mixja/dpdk,msune/dpdk,mixja/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,venkynv/dpdk-mirror,tsphillips/dpdk-fork,mixja/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk