ppc: Move mpc5xxx clocks to arch_global_data

Move ipb_clk and pci_clk into arch_global_data and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/include/asm/global_data.h b/arch/powerpc/include/asm/global_data.h
index ca36ca3..423e792 100644
--- a/arch/powerpc/include/asm/global_data.h
+++ b/arch/powerpc/include/asm/global_data.h
@@ -94,6 +94,9 @@
 #if defined(CONFIG_E500)
 	u32 used_tlb_cams[(CONFIG_SYS_NUM_TLBCAMS+31)/32];
 #endif
+#if defined(CONFIG_MPC5xxx)
+	unsigned long ipb_clk;
+#endif
 };
 
 /*
@@ -116,9 +119,6 @@
 #if defined(CONFIG_FSL_ESDHC)
 	u32 sdhc_clk;
 #endif
-#if defined(CONFIG_MPC5xxx)
-	unsigned long	ipb_clk;
-#endif
 #if defined(CONFIG_MPC512X)
 	u32 ips_clk;
 	u32 csb_clk;