powerpc: P1010: Remove macro CONFIG_P1010

Replace CONFIG_P1010 with ARCH_P1010 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 f4d9f9d..9b6dd34 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -96,6 +96,7 @@
 
 config TARGET_P1010RDB
 	bool "Support P1010RDB"
+	select ARCH_P1010
 	select SUPPORT_SPL
 	select SUPPORT_TPL
 
@@ -228,6 +229,9 @@
 config ARCH_MPC8572
 	bool
 
+config ARCH_P1010
+	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 e3f7dc8..de42b65 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -72,7 +72,7 @@
 obj-$(CONFIG_ARCH_MPC8568) += mpc8568_serdes.o
 obj-$(CONFIG_ARCH_MPC8569) += mpc8569_serdes.o
 obj-$(CONFIG_ARCH_MPC8572) += mpc8572_serdes.o
-obj-$(CONFIG_P1010)	+= p1010_serdes.o
+obj-$(CONFIG_ARCH_P1010)	+= p1010_serdes.o
 obj-$(CONFIG_P1011)	+= p1021_serdes.o
 obj-$(CONFIG_P1012)	+= p1021_serdes.o
 obj-$(CONFIG_P1013)	+= p1022_serdes.o
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 3ac3580..c20bc9d 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -707,7 +707,7 @@
 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
 	gd->arch.sdhc_clk = sys_info.freq_sdhc / 2;
 #else
-#if defined(CONFIG_ARCH_MPC8569) || defined(CONFIG_P1010) ||\
+#if defined(CONFIG_ARCH_MPC8569) || defined(CONFIG_ARCH_P1010) ||\
        defined(CONFIG_P1014)
 	gd->arch.sdhc_clk = gd->bus_clk;
 #else