powerpc: P1020: Remove macro CONFIG_P1020

Replace CONFIG_P1020 with ARCH_P1020 in Kconfig and clean up
existing macros.

Signed-off-by: York Sun <york.sun@nxp.com>
diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index f755bc8..9142b33 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -120,20 +120,25 @@
 	bool "Support P1020MBG-PC"
 	select SUPPORT_SPL
 	select SUPPORT_TPL
+	select ARCH_P1020
+
 config TARGET_P1020RDB_PC
 	bool "Support P1020RDB-PC"
 	select SUPPORT_SPL
 	select SUPPORT_TPL
+	select ARCH_P1020
 
 config TARGET_P1020RDB_PD
 	bool "Support P1020RDB-PD"
 	select SUPPORT_SPL
 	select SUPPORT_TPL
+	select ARCH_P1020
 
 config TARGET_P1020UTM
 	bool "Support P1020UTM"
 	select SUPPORT_SPL
 	select SUPPORT_TPL
+	select ARCH_P1020
 
 config TARGET_P1021RDB
 	bool "Support P1021RDB"
@@ -226,6 +231,7 @@
 
 config TARGET_UCP1020
 	bool "Support uCP1020"
+	select ARCH_P1020
 
 config TARGET_CYRUS
 	bool "Support Varisys Cyrus"
@@ -278,6 +284,9 @@
 config ARCH_P1011
 	bool
 
+config ARCH_P1020
+	bool
+
 config ARCH_P1022
 	bool
 
diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index 49dcbe3..26a6786 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -74,7 +74,7 @@
 obj-$(CONFIG_ARCH_MPC8572) += mpc8572_serdes.o
 obj-$(CONFIG_ARCH_P1010)	+= p1010_serdes.o
 obj-$(CONFIG_ARCH_P1011)	+= p1021_serdes.o
-obj-$(CONFIG_P1020)	+= p1021_serdes.o
+obj-$(CONFIG_ARCH_P1020)	+= p1021_serdes.o
 obj-$(CONFIG_P1021)	+= p1021_serdes.o
 obj-$(CONFIG_ARCH_P1022)	+= p1022_serdes.o
 obj-$(CONFIG_ARCH_P1023)	+= p1023_serdes.o
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 40b0671..4947e18 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -183,7 +183,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_A004508
 #define CONFIG_SYS_FSL_ERRATUM_A005125
 
-#elif defined(CONFIG_P1020)
+#elif defined(CONFIG_ARCH_P1020)
 #define CONFIG_MAX_CPUS			2
 #define CONFIG_SYS_FSL_NUM_LAWS		12
 #define CONFIG_SYS_PPC_E500_DEBUG_TLB	2
diff --git a/include/configs/UCP1020.h b/include/configs/UCP1020.h
index ce1cf97..1163b0d 100644
--- a/include/configs/UCP1020.h
+++ b/include/configs/UCP1020.h
@@ -27,7 +27,6 @@
 #define CONFIG_UCP1020_REV_1_3
 
 #define CONFIG_BOARDNAME "uCP1020-64EE512-0U1-XR-T1"
-#define CONFIG_P1020
 
 #define CONFIG_TSEC_ENET
 #define CONFIG_TSEC1
@@ -59,7 +58,6 @@
 #define CONFIG_UCP1020_REV_1_3
 
 #define CONFIG_BOARDNAME_LOCAL "uCP1020-64EEE512-OU1-XR"
-#define CONFIG_P1020
 
 #define CONFIG_TSEC_ENET
 #define CONFIG_TSEC1
diff --git a/include/configs/p1_p2_rdb_pc.h b/include/configs/p1_p2_rdb_pc.h
index fa7d059..c9191fa 100644
--- a/include/configs/p1_p2_rdb_pc.h
+++ b/include/configs/p1_p2_rdb_pc.h
@@ -12,7 +12,6 @@
 
 #if defined(CONFIG_TARGET_P1020MBG)
 #define CONFIG_BOARDNAME "P1020MBG-PC"
-#define CONFIG_P1020
 #define CONFIG_VSC7385_ENET
 #define CONFIG_SLIC
 #define __SW_BOOT_MASK		0x03
@@ -23,7 +22,6 @@
 
 #if defined(CONFIG_TARGET_P1020UTM)
 #define CONFIG_BOARDNAME "P1020UTM-PC"
-#define CONFIG_P1020
 #define __SW_BOOT_MASK		0x03
 #define __SW_BOOT_NOR		0xe0
 #define __SW_BOOT_SD		0x50
@@ -33,7 +31,6 @@
 #if defined(CONFIG_TARGET_P1020RDB_PC)
 #define CONFIG_BOARDNAME "P1020RDB-PC"
 #define CONFIG_NAND_FSL_ELBC
-#define CONFIG_P1020
 #define CONFIG_VSC7385_ENET
 #define CONFIG_SLIC
 #define __SW_BOOT_MASK		0x03
@@ -61,7 +58,6 @@
 #if defined(CONFIG_TARGET_P1020RDB_PD)
 #define CONFIG_BOARDNAME "P1020RDB-PD"
 #define CONFIG_NAND_FSL_ELBC
-#define CONFIG_P1020
 #define CONFIG_VSC7385_ENET
 #define CONFIG_SLIC
 #define __SW_BOOT_MASK		0x03
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 53b10f2..858c2d0 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -3383,7 +3383,6 @@
 CONFIG_OS_ENV_ADDR
 CONFIG_OTHBOOTARGS
 CONFIG_OVERWRITE_ETHADDR_ONCE
-CONFIG_P1020
 CONFIG_P1021
 CONFIG_P1024
 CONFIG_P1025