i40e/base: fix build with icc

i40e/base: fix build with icc

Below compile error can be found on ICC 13.0.0, which is a warning
treated as error. Forcedly disabling the warning can fix it.

Error log:
lib/librte_pmd_i40e/i40e/i40e_nvm.c(1022): error #188: enumerated
type mixed with another type
hw->aq.asq_last_status = old_asq_status;
                       ^

Fixes: 3b7271f3958a ("i40e/base: catch NVM write semaphore timeout and retry")

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Tetsuya Mukawa <mukawa@igel.co.jp>