xlnx-zynqmp: Remove unnecessary brackets around error messages The errp and err variable have unnecessary brackets around them, so remove the brackets. Signed-off-by: Alistair Francis <alistair.francis@xilinx.com> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 9900393572b63f2ec3d68785ca98193d81e0ac71.1441758563.git.alistair.francis@xilinx.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>