[PATCH] ixgbe: fix build with gcc 5

[Panu Matilainen <pmatilai-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

Add extra parenthesis to remove ambiguity on what we want to compare,
otherwise gcc 5 issues a "logical not is only applied to the left hand
side of comparison" warning which with -Werror fails the build.

Signed-off-by: Panu Matilainen <pmatilai-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
index 37e5bae..93a6a00 100644
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_common.c
@@ -2898,8 +2898,8 @@ STATIC s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
 	 */
 
 	linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
-	if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
-	    (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) {
+	if (((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE)) == 0) ||
+	    ((!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT)) == 1)) {
 		ERROR_REPORT1(IXGBE_ERROR_POLLING,
 			     "Auto-Negotiation did not complete or timed out");
 		goto out;
-- 
2.1.0