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/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
index c234eff..a823d39 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig
@@ -1,2 +1,9 @@
+config ARCH_LS1012A
+	bool "Freescale Layerscape LS1012A SoC"
+	select SYS_FSL_MMDC
+
 config ARCH_LS1046A
 	bool "Freescale Layerscape LS1046A SoC"
+
+config SYS_FSL_MMDC
+	bool "Freescale Multi Mode DDR Controller"
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Makefile b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
index f9590af..51c1cee 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/Makefile
+++ b/arch/arm/cpu/armv8/fsl-layerscape/Makefile
@@ -30,7 +30,7 @@
 obj-$(CONFIG_SYS_HAS_SERDES) += ls1043a_serdes.o
 endif
 
-ifneq ($(CONFIG_LS1012A),)
+ifneq ($(CONFIG_ARCH_LS1012A),)
 obj-$(CONFIG_SYS_HAS_SERDES) += ls1012a_serdes.o
 endif
 
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
index 8922197..55005f0 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_speed.c
@@ -60,7 +60,7 @@
 	sys_info->freq_ddrbus = sysclk;
 #endif
 
-#ifdef CONFIG_LS1012A
+#ifdef CONFIG_ARCH_LS1012A
 	sys_info->freq_ddrbus *= (gur_in32(&gur->rcwsr[0]) >>
 			FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_SHIFT) &
 			FSL_CHASSIS2_RCWSR0_SYS_PLL_RAT_MASK;
@@ -91,7 +91,7 @@
 			freq_c_pll[cplx_pll] / core_cplx_pll_div[c_pll_sel];
 	}
 
-#ifdef CONFIG_LS1012A
+#ifdef CONFIG_ARCH_LS1012A
 	sys_info->freq_systembus = sys_info->freq_ddrbus / 2;
 	sys_info->freq_ddrbus *= 2;
 #endif