armv8: ls1012a: Convert CONFIG_LS1012A to Kconfig option ARCH_LS1021A

Move this config to Kconfig option and clean up existing uses.

Signed-off-by: York Sun <york.sun@nxp.com>
CC: Calvin Johnson <calvin.johnson@nxp.com>
CC: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/ls1012a_common.h b/include/configs/ls1012a_common.h
index fba2fac..5fb6c47 100644
--- a/include/configs/ls1012a_common.h
+++ b/include/configs/ls1012a_common.h
@@ -9,7 +9,6 @@
 
 #define CONFIG_FSL_LAYERSCAPE
 #define CONFIG_FSL_LSCH2
-#define CONFIG_LS1012A
 #define CONFIG_GICV2
 
 #define	CONFIG_SYS_HAS_SERDES
diff --git a/include/linux/usb/xhci-fsl.h b/include/linux/usb/xhci-fsl.h
index 199f366..d04e3cc 100644
--- a/include/linux/usb/xhci-fsl.h
+++ b/include/linux/usb/xhci-fsl.h
@@ -51,7 +51,7 @@
 	struct dwc3 *dwc3_reg;
 };
 
-#if defined(CONFIG_LS102XA) || defined(CONFIG_LS1012A)
+#if defined(CONFIG_LS102XA) || defined(CONFIG_ARCH_LS1012A)
 #define CONFIG_SYS_FSL_XHCI_USB1_ADDR CONFIG_SYS_XHCI_USB1_ADDR
 #define CONFIG_SYS_FSL_XHCI_USB2_ADDR 0
 #define CONFIG_SYS_FSL_XHCI_USB3_ADDR 0