powerpc: mpc85xx: Move macro CONFIG_SYS_PPC64 to Kconfig

Use Kconfig option SYS_PPC64 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 1e97c69..704f65b 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -348,6 +348,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_B4860
 	bool
@@ -370,6 +371,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_BSC9131
 	bool
@@ -727,6 +729,7 @@
 	select SYS_FSL_QORIQ_CHASSIS1
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_P5040
 	bool
@@ -746,6 +749,7 @@
 	select SYS_FSL_QORIQ_CHASSIS1
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_QEMU_E500
 	bool
@@ -833,6 +837,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_T2081
 	bool
@@ -851,6 +856,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_T4160
 	bool
@@ -870,6 +876,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config ARCH_T4240
 	bool
@@ -890,6 +897,7 @@
 	select SYS_FSL_QORIQ_CHASSIS2
 	select SYS_FSL_SEC_BE
 	select SYS_FSL_SEC_COMPAT_4
+	select SYS_PPC64
 
 config BOOKE
 	bool
@@ -1210,6 +1218,9 @@
 		Number of TLB CAM entries for Book-E chips. 64 for E500MC,
 		16 for other E500 SoCs.
 
+config SYS_PPC64
+	bool
+
 config SYS_PPC_E500_USE_DEBUG_TLB
 	bool
 
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 8cde05c..6fd218a 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -172,7 +172,6 @@
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xff000000
 
 #elif defined(CONFIG_ARCH_P5020) /* also supports P5010 */
-#define CONFIG_SYS_PPC64		/* 64-bit core */
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_SYS_FSL_NUM_CC_PLLS	2
 #define CONFIG_SYS_NUM_FMAN		1
@@ -191,7 +190,6 @@
 #define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xc0000000
 
 #elif defined(CONFIG_ARCH_P5040)
-#define CONFIG_SYS_PPC64
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_SYS_FSL_NUM_CC_PLLS	3
 #define CONFIG_SYS_NUM_FMAN		2
@@ -233,7 +231,6 @@
 #define CONFIG_ESDHC_HC_BLK_ADDR
 
 #elif defined(CONFIG_ARCH_T4240) || defined(CONFIG_ARCH_T4160)
-#define CONFIG_SYS_PPC64		/* 64-bit core */
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_SYS_FSL_CORES_PER_CLUSTER 4
 #define CONFIG_SYS_FSL_QMAN_V3		/* QMAN version 3 */
@@ -277,7 +274,6 @@
 #define CONFIG_SYS_FSL_PCI_VER_3_X
 
 #elif defined(CONFIG_ARCH_B4860) || defined(CONFIG_ARCH_B4420)
-#define CONFIG_SYS_PPC64		/* 64-bit core */
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_SYS_FSL_QMAN_V3		/* QMAN version 3 */
 #define CONFIG_HETROGENOUS_CLUSTERS     /* DSP/SC3900 core clusters */
@@ -388,7 +384,6 @@
 #define CONFIG_SYS_FSL_SFP_VER_3_0
 
 #elif defined(CONFIG_ARCH_T2080) || defined(CONFIG_ARCH_T2081)
-#define CONFIG_SYS_PPC64		/* 64-bit core */
 #define CONFIG_FSL_CORENET		/* Freescale CoreNet platform */
 #define CONFIG_SYS_FSL_CORES_PER_CLUSTER 4
 #define CONFIG_SYS_FSL_NUM_CC_PLLS	2