ixgbevf: Resolve missing-field-initializers warnings

Resolve missing-field-initializers warnings by using
designated initialization.

Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbevf/ethtool.c

@@ -523,7 +523,7 @@ static const struct ixgbevf_reg_test reg_test_vf[] = {
 	{ IXGBE_VFTDBAL(0), 2, PATTERN_TEST, 0xFFFFFF80, 0xFFFFFFFF },
 	{ IXGBE_VFTDBAH(0), 2, PATTERN_TEST, 0xFFFFFFFF, 0xFFFFFFFF },
 	{ IXGBE_VFTDLEN(0), 2, PATTERN_TEST, 0x000FFF80, 0x000FFF80 },
-	{ 0, 0, 0, 0 }
+	{ .reg = 0 }
 };
 
 static const u32 register_test_patterns[] = {