arm: layerscape: Move CONFIG_SYS_FSL_ERRATUM_* to Kconfig

Use Kconfig to select errata workaround.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/drivers/ddr/fsl/Kconfig b/drivers/ddr/fsl/Kconfig
index ad5858d..50adca5 100644
--- a/drivers/ddr/fsl/Kconfig
+++ b/drivers/ddr/fsl/Kconfig
@@ -120,3 +120,24 @@
 endchoice
 
 endmenu
+
+config SYS_FSL_ERRATUM_A008378
+	bool
+
+config SYS_FSL_ERRATUM_A008511
+	bool
+
+config SYS_FSL_ERRATUM_A009663
+	bool
+
+config SYS_FSL_ERRATUM_A009801
+	bool
+
+config SYS_FSL_ERRATUM_A009803
+	bool
+
+config SYS_FSL_ERRATUM_A009942
+	bool
+
+config SYS_FSL_ERRATUM_A010165
+	bool