board: sl28: move DM_* configs to Kconfig

Move the CONFIG_DM_* from the defconfig to the TARGET_SL28 config.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 8b40fc4..fa98c1a 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1605,6 +1605,25 @@
 	select ARMV8_MULTIENTRY
 	select SUPPORT_SPL
 	select BINMAN
+	select DM
+	select DM_GPIO
+	select DM_I2C
+	select DM_MMC
+	select DM_SPI_FLASH
+	select DM_ETH
+	select DM_MDIO
+	select DM_PCI
+	select DM_RNG
+	select DM_RTC
+	select DM_SCSI
+	select DM_SPI
+	select DM_USB
+	select SPL_DM if SPL
+	select SPL_DM_SPI if SPL
+	select SPL_DM_SPI_FLASH if SPL
+	select SPL_DM_I2C if SPL
+	select SPL_DM_MMC if SPL
+	select SPL_DM_SERIAL if SPL
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