ppc: Move clock fields to arch_global_data

Move vco_out, cpm_clk, scc_clk, brg_clk into arch_global_data and tidy
up. Leave pci_clk on its own since this should really depend only on
CONFIG_PCI and not any particular chip type.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/mpc8260/speed.c b/arch/powerpc/cpu/mpc8260/speed.c
index 4ad1ec2..7841e8a 100644
--- a/arch/powerpc/cpu/mpc8260/speed.c
+++ b/arch/powerpc/cpu/mpc8260/speed.c
@@ -135,17 +135,17 @@
 	    (get_pvr () == PVR_8260_HIP7R1) ||
 	    (get_pvr () == PVR_8260_HIP7RA)) {
 		pllmf = (scmr & SCMR_PLLMF_MSKH7) >> SCMR_PLLMF_SHIFT;
-		gd->vco_out = clkin * (pllmf + 1);
+		gd->arch.vco_out = clkin * (pllmf + 1);
 	} else {                        /* HiP3, HiP4 */
 		pllmf = (scmr & SCMR_PLLMF_MSK) >> SCMR_PLLMF_SHIFT;
 		plldf = (scmr & SCMR_PLLDF) ? 1 : 0;
-		gd->vco_out = (clkin * 2 * (pllmf + 1)) / (plldf + 1);
+		gd->arch.vco_out = (clkin * 2 * (pllmf + 1)) / (plldf + 1);
 	}
 
-	gd->cpm_clk = gd->vco_out / 2;
+	gd->arch.cpm_clk = gd->arch.vco_out / 2;
 	gd->bus_clk = clkin;
-	gd->scc_clk = gd->vco_out / 4;
-	gd->arch.brg_clk = gd->vco_out / (1 << (2 * (dfbrg + 1)));
+	gd->arch.scc_clk = gd->arch.vco_out / 4;
+	gd->arch.brg_clk = gd->arch.vco_out / (1 << (2 * (dfbrg + 1)));
 
 	if (cp->b2c_mult > 0) {
 		gd->cpu_clk = (clkin * cp->b2c_mult) / 2;
@@ -173,7 +173,7 @@
 			pci_div = pcidf + 1;
 		}
 
-		gd->pci_clk = (gd->cpm_clk * 2) / pci_div;
+		gd->pci_clk = (gd->arch.cpm_clk * 2) / pci_div;
 	}
 #endif
 
@@ -231,10 +231,10 @@
 			plldf, pllmf, pcidf);
 
 	printf (" - vco_out %10ld, scc_clk %10ld, brg_clk %10ld\n",
-			gd->vco_out, gd->scc_clk, gd->arch.brg_clk);
+			gd->arch.vco_out, gd->arch.scc_clk, gd->arch.brg_clk);
 
 	printf (" - cpu_clk %10ld, cpm_clk %10ld, bus_clk %10ld\n",
-			gd->cpu_clk, gd->cpm_clk, gd->bus_clk);
+			gd->cpu_clk, gd->arch.cpm_clk, gd->bus_clk);
 #ifdef CONFIG_PCI
 	printf (" - pci_clk %10ld\n", gd->pci_clk);
 #endif