Spansion s25sl032p supports Dual and Quad SPI transfers, hence set the
SPI_NOR_DUAL_READ and SPI_NOR_QUAD_READ flags.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>