riscv: defconfig: enable SPI_FSL_QUADSPI as a module

The SpacemiT K1 SoC QSPI IP uses the Freescale driver.  Enable it as a
module in the default kernel configuration for RISC-V.

Acked-by: Paul Walmsley <pjw@kernel.org>  # for arch/riscv
Signed-off-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>

arch/riscv/configs/defconfig

@@ -158,6 +158,7 @@ CONFIG_I2C_DESIGNWARE_CORE=y
 CONFIG_I2C_MV64XXX=m
 CONFIG_SPI=y
 CONFIG_SPI_CADENCE_QUADSPI=m
+CONFIG_SPI_FSL_QUADSPI=m
 CONFIG_SPI_PL022=m
 CONFIG_SPI_SIFIVE=y
 CONFIG_SPI_SUN6I=y