ppc: Remove xpedite boards

These boards have not been converted to CONFIG_DM_PCI by the deadline and is
also missing conversion to CONFIG_DM.  Remove them.  As this includes
the last ARCH_MPC8572 platform, remove that as well.

Cc: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h
index 900b8f4..70112c9 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -2853,7 +2853,7 @@
 #define CONFIG_SYS_MPC85xx_PCIX2_OFFSET		0x9000
 #define CONFIG_SYS_MPC85xx_PCIE1_OFFSET         0xa000
 #define CONFIG_SYS_MPC85xx_PCIE2_OFFSET         0x9000
-#if defined(CONFIG_ARCH_MPC8572) || defined(CONFIG_ARCH_P2020)
+#if defined(CONFIG_ARCH_P2020)
 #define CONFIG_SYS_MPC85xx_PCIE3_OFFSET         0x8000
 #else
 #define CONFIG_SYS_MPC85xx_PCIE3_OFFSET         0xb000