B4420/B4860 PCIE can not work because of the wrong definition of
the PCIE register offset in the file:
	arch/powerpc/include/asm/immap_85xx.h
Add the judgement of B4420/B4860 to make the register offset to:
	#define CONFIG_SYS_MPC85xx_PCIE1_OFFSET         0x200000
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
 #define CONFIG_SYS_MPC85xx_IFC_OFFSET          0x124000
 #define CONFIG_SYS_MPC85xx_GPIO_OFFSET         0x130000
 #define CONFIG_SYS_FSL_CORENET_RMAN_OFFSET     0x1e0000
-#ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2
+#if defined(CONFIG_SYS_FSL_QORIQ_CHASSIS2) && !defined(CONFIG_PPC_B4860)\
+       && !defined(CONFIG_PPC_B4420)
 #define CONFIG_SYS_MPC85xx_PCIE1_OFFSET                0x240000
 #define CONFIG_SYS_MPC85xx_PCIE2_OFFSET                0x250000
 #define CONFIG_SYS_MPC85xx_PCIE3_OFFSET                0x260000