configs: sandbox: Enable NVMXIP QSPI driver

Enable NVMXIP QSPI driver on sandbox, since it is already enabled
on sandbox64.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 0f01471..98f0bc1 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -226,6 +226,7 @@
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_SST=y
 CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_NVMXIP_QSPI=y
 CONFIG_MULTIPLEXER=y
 CONFIG_MUX_MMIO=y
 CONFIG_NVME_PCI=y