powerpc/pcie: remove PCIe version 3.x define for B4860 and B4420

B4860 and B4420 has PCIe version 2.4 IP instead of 3.x

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 517e9b2..f946389 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -578,7 +578,6 @@
 #define CONFIG_SYS_FSL_ERRATUM_A005871
 #define CONFIG_SYS_FSL_ERRATUM_A006593
 #define CONFIG_SYS_CCSRBAR_DEFAULT	0xfe000000
-#define CONFIG_SYS_FSL_PCI_VER_3_X
 
 #ifdef CONFIG_PPC_B4860
 #define CONFIG_SYS_FSL_CORES_PER_CLUSTER 4