clang reports the following error:
error: logical not is only applied to the left hand side of this bitwise
operator. [-Werror,-Wlogical-not-parentheses]
Fixes: 92c8a63223e5 ("cxgbe: add device configuration and Rx support")
Signed-off-by: Emmanuel Roullit <emmanuel.roullit@gmail.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>