ppc: m68k: Move i2c1_clk, i2c2_clk to arch_global_data

Move these fields into arch_global_data and tidy up. This is needed for
both ppc and m68k since they share the i2c driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/powerpc/cpu/mpc83xx/speed.c b/arch/powerpc/cpu/mpc83xx/speed.c
index 7f98ee8..a40a055 100644
--- a/arch/powerpc/cpu/mpc83xx/speed.c
+++ b/arch/powerpc/cpu/mpc83xx/speed.c
@@ -481,9 +481,9 @@
 	gd->sdhc_clk = sdhc_clk;
 #endif
 	gd->arch.core_clk = core_clk;
-	gd->i2c1_clk = i2c1_clk;
+	gd->arch.i2c1_clk = i2c1_clk;
 #if !defined(CONFIG_MPC832x)
-	gd->i2c2_clk = i2c2_clk;
+	gd->arch.i2c2_clk = i2c2_clk;
 #endif
 #if !defined(CONFIG_MPC8309)
 	gd->arch.enc_clk = enc_clk;
@@ -558,9 +558,11 @@
 	printf("  SEC:                 %-4s MHz\n",
 	       strmhz(buf, gd->arch.enc_clk));
 #endif
-	printf("  I2C1:                %-4s MHz\n", strmhz(buf, gd->i2c1_clk));
+	printf("  I2C1:                %-4s MHz\n",
+	       strmhz(buf, gd->arch.i2c1_clk));
 #if !defined(CONFIG_MPC832x)
-	printf("  I2C2:                %-4s MHz\n", strmhz(buf, gd->i2c2_clk));
+	printf("  I2C2:                %-4s MHz\n",
+	       strmhz(buf, gd->arch.i2c2_clk));
 #endif
 #if defined(CONFIG_MPC8315)
 	printf("  TDM:                 %-4s MHz\n",
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index f3132fb..81c80e7 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -406,7 +406,7 @@
 	 */
 #if defined(CONFIG_MPC8540) || defined(CONFIG_MPC8541) || \
 	defined(CONFIG_MPC8560) || defined(CONFIG_MPC8555)
-	gd->i2c1_clk = sys_info.freqSystemBus;
+	gd->arch.i2c1_clk = sys_info.freqSystemBus;
 #elif defined(CONFIG_MPC8544)
 	/*
 	 * On the 8544, the I2C clock is the same as the SEC clock.  This can be
@@ -416,14 +416,14 @@
 	 * PORDEVSR2_SEC_CFG bit is 0 on all 85xx boards that are not an 8544.
 	 */
 	if (gur->pordevsr2 & MPC85xx_PORDEVSR2_SEC_CFG)
-		gd->i2c1_clk = sys_info.freqSystemBus / 3;
+		gd->arch.i2c1_clk = sys_info.freqSystemBus / 3;
 	else
-		gd->i2c1_clk = sys_info.freqSystemBus / 2;
+		gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
 #else
 	/* Most 85xx SOCs use CCB/2, so this is the default behavior. */
-	gd->i2c1_clk = sys_info.freqSystemBus / 2;
+	gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
 #endif
-	gd->i2c2_clk = gd->i2c1_clk;
+	gd->arch.i2c2_clk = gd->arch.i2c1_clk;
 
 #if defined(CONFIG_FSL_ESDHC)
 #if defined(CONFIG_MPC8569) || defined(CONFIG_P1010) ||\
diff --git a/arch/powerpc/cpu/mpc86xx/speed.c b/arch/powerpc/cpu/mpc86xx/speed.c
index e5798ee..18c1eea 100644
--- a/arch/powerpc/cpu/mpc86xx/speed.c
+++ b/arch/powerpc/cpu/mpc86xx/speed.c
@@ -130,11 +130,11 @@
 	 * AN2919.
 	 */
 #ifdef CONFIG_MPC8610
-	gd->i2c1_clk = sys_info.freqSystemBus;
+	gd->arch.i2c1_clk = sys_info.freqSystemBus;
 #else
-	gd->i2c1_clk = sys_info.freqSystemBus / 2;
+	gd->arch.i2c1_clk = sys_info.freqSystemBus / 2;
 #endif
-	gd->i2c2_clk = gd->i2c1_clk;
+	gd->arch.i2c2_clk = gd->arch.i2c1_clk;
 
 	if (gd->cpu_clk != 0)
 		return 0;
diff --git a/arch/powerpc/include/asm/global_data.h b/arch/powerpc/include/asm/global_data.h
index d924673..b710f25 100644
--- a/arch/powerpc/include/asm/global_data.h
+++ b/arch/powerpc/include/asm/global_data.h
@@ -80,6 +80,11 @@
 	u32 lbc_clk;
 	void *cpu;
 #endif /* CONFIG_MPC85xx || CONFIG_MPC86xx */
+#if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || \
+		defined(CONFIG_MPC86xx)
+	u32 i2c1_clk;
+	u32 i2c2_clk;
+#endif
 };
 
 /*
@@ -102,10 +107,6 @@
 #if defined(CONFIG_FSL_ESDHC)
 	u32 sdhc_clk;
 #endif
-#if defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
-	u32 i2c1_clk;
-	u32 i2c2_clk;
-#endif
 #if defined(CONFIG_QE)
 	u32 qe_clk;
 	uint mp_alloc_base;