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/cpu/mpc5xxx/i2c.c b/arch/powerpc/cpu/mpc5xxx/i2c.c
index b423d2f..8d5f47b 100644
--- a/arch/powerpc/cpu/mpc5xxx/i2c.c
+++ b/arch/powerpc/cpu/mpc5xxx/i2c.c
@@ -310,7 +310,7 @@
 			{126, 128}
 		};
 
-		ipb = gd->ipb_clk;
+		ipb = gd->arch.ipb_clk;
 		for (i = 7; i >= 0; i--) {
 			for (j = 7; j >= 0; j--) {
 				scl = 2 * (scltap[j].scl2tap +
diff --git a/arch/powerpc/cpu/mpc5xxx/ide.c b/arch/powerpc/cpu/mpc5xxx/ide.c
index d337abb..094f62b 100644
--- a/arch/powerpc/cpu/mpc5xxx/ide.c
+++ b/arch/powerpc/cpu/mpc5xxx/ide.c
@@ -75,7 +75,7 @@
 	psdma->PtdCntrl |= 1;
 
 	/* Init timings : we use PIO mode 0 timings */
-	period = 1000000000 / gd->ipb_clk;	/* period in ns */
+	period = 1000000000 / gd->arch.ipb_clk;	/* period in ns */
 
 	t0 = CALC_TIMING (600);
 	t2_8 = CALC_TIMING (290);
diff --git a/arch/powerpc/cpu/mpc5xxx/serial.c b/arch/powerpc/cpu/mpc5xxx/serial.c
index eb14161..1ccb4e3 100644
--- a/arch/powerpc/cpu/mpc5xxx/serial.c
+++ b/arch/powerpc/cpu/mpc5xxx/serial.c
@@ -89,7 +89,7 @@
 
 	/* select clock sources */
 	psc->psc_clock_select = 0;
-	baseclk = (gd->ipb_clk + 16) / 32;
+	baseclk = (gd->arch.ipb_clk + 16) / 32;
 
 	/* switch to UART mode */
 	psc->sicr = 0;
@@ -169,7 +169,7 @@
 	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)dev_base;
 	unsigned long baseclk, div;
 
-	baseclk = (gd->ipb_clk + 16) / 32;
+	baseclk = (gd->arch.ipb_clk + 16) / 32;
 
 	/* set up UART divisor */
 	div = (baseclk + (gd->baudrate/2)) / gd->baudrate;
diff --git a/arch/powerpc/cpu/mpc5xxx/speed.c b/arch/powerpc/cpu/mpc5xxx/speed.c
index 8027d3e..5353e3d 100644
--- a/arch/powerpc/cpu/mpc5xxx/speed.c
+++ b/arch/powerpc/cpu/mpc5xxx/speed.c
@@ -66,14 +66,20 @@
 
 	val = *(vu_long *)MPC5XXX_CDM_CFG;
 	if (val & (1 << 8)) {
-		gd->ipb_clk = gd->bus_clk / 2;
+		gd->arch.ipb_clk = gd->bus_clk / 2;
 	} else {
-		gd->ipb_clk = gd->bus_clk;
+		gd->arch.ipb_clk = gd->bus_clk;
 	}
 	switch (val & 3) {
-		case 0: gd->pci_clk = gd->ipb_clk; break;
-		case 1: gd->pci_clk = gd->ipb_clk / 2; break;
-		default: gd->pci_clk = gd->bus_clk / 4; break;
+	case 0:
+		gd->pci_clk = gd->arch.ipb_clk;
+		break;
+	case 1:
+		gd->pci_clk = gd->arch.ipb_clk / 2;
+		break;
+	default:
+		gd->pci_clk = gd->bus_clk / 4;
+		break;
 	}
 
 	return (0);
@@ -85,7 +91,7 @@
 
 	printf ("       Bus %s MHz, IPB %s MHz, PCI %s MHz\n",
 		strmhz(buf1, gd->bus_clk),
-		strmhz(buf2, gd->ipb_clk),
+		strmhz(buf2, gd->arch.ipb_clk),
 		strmhz(buf3, gd->pci_clk)
 	);
 	return (0);