powerpc: T4160: Remove macro CONFIG_PPC_T4160

Use CONFIG_ARCH_T4160 instead.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index 9d4e5ba..991127d 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -262,11 +262,13 @@
 
 config TARGET_T4160QDS
 	bool "Support T4160QDS"
+	select ARCH_T4160
 	select SUPPORT_SPL
 	select PHYS_64BIT
 
 config TARGET_T4160RDB
 	bool "Support T4160RDB"
+	select ARCH_T4160
 	select SUPPORT_SPL
 	select PHYS_64BIT
 
@@ -419,6 +421,9 @@
 config ARCH_T2081
 	bool
 
+config ARCH_T4160
+	bool
+
 source "board/freescale/b4860qds/Kconfig"
 source "board/freescale/bsc9131rdb/Kconfig"
 source "board/freescale/bsc9132qds/Kconfig"
diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index f74018b..cf2aaa1 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -45,7 +45,7 @@
 obj-$(CONFIG_ARCH_P5020) += p5020_ids.o
 obj-$(CONFIG_ARCH_P5040) += p5040_ids.o
 obj-$(CONFIG_PPC_T4240) += t4240_ids.o
-obj-$(CONFIG_PPC_T4160) += t4240_ids.o
+obj-$(CONFIG_ARCH_T4160) += t4240_ids.o
 obj-$(CONFIG_PPC_T4080) += t4240_ids.o
 obj-$(CONFIG_ARCH_B4420) += b4860_ids.o
 obj-$(CONFIG_ARCH_B4860) += b4860_ids.o
@@ -87,7 +87,7 @@
 obj-$(CONFIG_ARCH_P5020) += p5020_serdes.o
 obj-$(CONFIG_ARCH_P5040) += p5040_serdes.o
 obj-$(CONFIG_PPC_T4240) += t4240_serdes.o
-obj-$(CONFIG_PPC_T4160) += t4240_serdes.o
+obj-$(CONFIG_ARCH_T4160) += t4240_serdes.o
 obj-$(CONFIG_PPC_T4080) += t4240_serdes.o
 obj-$(CONFIG_ARCH_B4420) += b4860_serdes.o
 obj-$(CONFIG_ARCH_B4860) += b4860_serdes.o
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index 6bde60d..9fab8ed 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -512,7 +512,7 @@
 #endif
 
 #if defined(CONFIG_ARCH_T2080) || defined(CONFIG_PPC_T4240) || \
-	defined(CONFIG_PPC_T4160) || defined(CONFIG_PPC_T4080)
+	defined(CONFIG_ARCH_T4160) || defined(CONFIG_PPC_T4080)
 void fdt_fixup_dma3(void *blob)
 {
 	/* the 3rd DMA is not functional if SRIO2 is chosen */
@@ -529,7 +529,7 @@
 	case 0x29:
 	case 0x2d:
 	case 0x2e:
-#elif defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160) || \
+#elif defined(CONFIG_PPC_T4240) || defined(CONFIG_ARCH_T4160) || \
 	defined(CONFIG_PPC_T4080)
 	u32 srds_prtcl_s4 = in_be32(&gur->rcwsr[4]) &
 				    FSL_CORENET2_RCWSR4_SRDS4_PRTCL;
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 4de5dcf..e4feb3f 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -130,7 +130,7 @@
 	 * it uses 6.
 	 * T2080 rev 1.1 and later also use half mem_pll comparing with rev 1.0
 	 */
-#if defined(CONFIG_PPC_T4240) || defined(CONFIG_PPC_T4160) || \
+#if defined(CONFIG_PPC_T4240) || defined(CONFIG_ARCH_T4160) || \
 	defined(CONFIG_PPC_T4080) || defined(CONFIG_ARCH_T2080) || \
 	defined(CONFIG_ARCH_T2081)
 	svr = get_svr();
diff --git a/arch/powerpc/cpu/mpc85xx/t4240_serdes.c b/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
index 7b43b28..4b73e76 100644
--- a/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/t4240_serdes.c
@@ -263,7 +263,7 @@
 	{18, {PCIE3, PCIE3, PCIE3, PCIE3, AURORA, AURORA, AURORA, AURORA}},
 	{}
 };
-#elif defined(CONFIG_PPC_T4160) || defined(CONFIG_PPC_T4080)
+#elif defined(CONFIG_ARCH_T4160) || defined(CONFIG_PPC_T4080)
 static const struct serdes_config serdes1_cfg_tbl[] = {
 	/* SerDes 1 */
 	{1, {NONE, NONE, NONE, NONE,