arm64: zynqmp: Setup DM_ETH/MMC if NET/MMC is enabled

Setup proper ETH/MMC dependency for the whole platform.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index d69958b..271d883 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -941,6 +941,8 @@
 	select ARM64
 	select CLK
 	select DM
+	select DM_ETH if NET
+	select DM_MMC if MMC
 	select DM_SERIAL
 	select DM_USB if USB
 	select OF_CONTROL