microblaze: Enable spi for microblaze

Enable SPI drivers and driver model for microblaze.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index ff6b3c7..2755cce 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -16,6 +16,9 @@
 	select OF_CONTROL
 	select SUPPORT_SPL
 	select SYSRESET
+	select DM_SPI
+	select DM_SPI_FLASH
+	select SPI
 	imply CMD_DM
 
 endchoice