microblaze: Enable DM by default

Enable DM for the whole architecture.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index a730b72..604f681 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -12,6 +12,7 @@
 	bool "Support microblaze-generic"
 	select SUPPORT_SPL
 	select OF_CONTROL
+	select DM
 
 endchoice
 
diff --git a/configs/microblaze-generic_defconfig b/configs/microblaze-generic_defconfig
index c13efd0..54aa3ef 100644
--- a/configs/microblaze-generic_defconfig
+++ b/configs/microblaze-generic_defconfig
@@ -1,5 +1,4 @@
 CONFIG_MICROBLAZE=y
-CONFIG_SYS_MALLOC_F=y
 CONFIG_SPL_SYS_MALLOC_SIMPLE=y
 CONFIG_TARGET_MICROBLAZE_GENERIC=y
 CONFIG_DEFAULT_DEVICE_TREE="microblaze-generic"