spi: atmel-quadspi: align condition to parenthesis

Align condition to parenthesis.
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220609084246.1795419-4-claudiu.beznea@microchip.comSigned-off-by: NMark Brown <broonie@kernel.org>