nxp: Migrate a number of DDR related symbols to Kconfig

- Guard most of the options in drivers/ddr/fsl/Kconfig with
  SYS_FSL_DDR || SYS_FSL_MMDC.
- Migrate FSL_DMA, DDR_ECC, DDR_ECC_CMD, and ECC_INIT_VIA_DDRCONTROLLER
  to Kconfig.
- Clean up the logic for including the DDR_ECC_CMD code.

Signed-off-by: Tom Rini <trini@konsulko.com>

drivers/ddr/fsl/Kconfig

@@ -10,6 +10,8 @@ config SYS_FSL_MMDC
 	help
 	  Select Freescale Multi Mode DDR controller (MMDC).
 
+if SYS_FSL_DDR || SYS_FSL_MMDC
+
 config SYS_FSL_DDR_BE
 	bool
 	help
@@ -142,6 +144,25 @@ endchoice
 
 endmenu
 
+config FSL_DMA
+	def_bool y if DDR_ECC && MPC85xx && !ECC_INIT_VIA_DDRCONTROLLER
+
+config DDR_ECC
+	bool "ECC DDR memory support"
+
+config DDR_ECC_CMD
+	bool "Access the ECC features of the memory controller"
+	depends on DDR_ECC && MPC83xx
+	default y
+
+config ECC_INIT_VIA_DDRCONTROLLER
+	bool "DDR Memory controller initializes memory."
+	help
+	  Use the DDR controller to auto initialize memory.  If not enabled,
+	  the DMA controller is responsible for doing this.
+
+endif
+
 config SYS_FSL_ERRATUM_A008378
 	bool