net/ixgbe/base: fix IXGBE LSWFW register
net/ixgbe/base: fix IXGBE LSWFW register

This register was incorrect when compared to the data sheet.
Even though the driver doesn't currently use this register,
it is better to fix it upstream.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Wei Dai <17e09bedab62904a2ae618ef4468b0b1372334a2@intel.com>

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