mpc83xx: add QE ethernet support

this patch adds support for the QUICC Engine based UCC gigabit ethernet device.
diff --git a/include/asm-ppc/global_data.h b/include/asm-ppc/global_data.h
index 418315b..8bc61b6 100644
--- a/include/asm-ppc/global_data.h
+++ b/include/asm-ppc/global_data.h
@@ -69,6 +69,8 @@
 #if defined(CONFIG_QE)
 	u32 qe_clk;
 	u32 brg_clk;
+	uint mp_alloc_base;
+	uint mp_alloc_top;
 #endif /* CONFIG_QE */
 #if defined (CONFIG_MPC8360)
 	u32  ddr_sec_clk;