drivers/fsl-mc: Create Kconfig file to manage driver specific configs better

Create drivers/net/fsl-mc/Kconfig and move fsl-mc specific configs
from arch/arm/cpu/armv8/fsl-layerscape/Kconfig to this new Kconfig

Signed-off-by: Florinel Iordache <florinel.iordache@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 084e095..aaf10a2 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -1,5 +1,6 @@
 source "drivers/net/phy/Kconfig"
 source "drivers/net/pfe_eth/Kconfig"
+source "drivers/net/fsl-mc/Kconfig"
 
 config DM_ETH
 	bool "Enable Driver Model for Ethernet drivers"
diff --git a/drivers/net/fsl-mc/Kconfig b/drivers/net/fsl-mc/Kconfig
new file mode 100644
index 0000000..25a2cb8
--- /dev/null
+++ b/drivers/net/fsl-mc/Kconfig
@@ -0,0 +1,25 @@
+#
+# NXP Management Complex
+#
+
+menuconfig FSL_MC_ENET
+	bool "NXP Management Complex"
+	depends on ARCH_LS2080A || ARCH_LS1088A || ARCH_LX2160A
+	default y
+	select RESV_RAM
+	help
+	  Enable Management Complex (MC) network
+	  This is NXP Management Complex menuconfig
+	  that contains all MC related config options
+
+if FSL_MC_ENET
+
+config SYS_MC_RSV_MEM_ALIGN
+	hex "Management Complex reserved memory alignment"
+	depends on RESV_RAM
+	default 0x20000000 if ARCH_LS2080A || ARCH_LS1088A || ARCH_LX2160A
+	help
+	  Reserved memory needs to be aligned for MC to use. Default value
+	  is 512MB.
+
+endif # FSL_MC_ENET