powerpc/85xx: fixup flexcan device tree clock-frequency

Make the fixup matchable with dts and kernel.  Update the compatible from
"fsl,flexcan-v1.0" to "fsl,p1010-flexcan" and Change the "clock-freq"
property to "clock-frequency".  We also change flexcan frequency from
CCB-clock to CCB-clock/2 according to P1010 spec.

We now keep the old interfaces to make previous kernel work. They should
be removed in the future.
Signed-off-by: NJia Hongtao <B38951@freescale.com>
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/cpu/mpc85xx/fdt.c

@@ -660,8 +660,19 @@ void ft_cpu_setup(void *blob, bd_t *bd)
 	do_fixup_by_compat_u32(blob, "fsl,gianfar-ptp-timer",
 			"timer-frequency", gd->bus_clk/2, 1);
 
+	/*
+	 * clock-freq should change to clock-frequency and
+	 * flexcan-v1.0 should change to p1010-flexcan respectively
+	 * in the future.
+	 */
 	do_fixup_by_compat_u32(blob, "fsl,flexcan-v1.0",
-			"clock_freq", gd->bus_clk, 1);
+			"clock_freq", gd->bus_clk/2, 1);
+
+	do_fixup_by_compat_u32(blob, "fsl,flexcan-v1.0",
+			"clock-frequency", gd->bus_clk/2, 1);
+
+	do_fixup_by_compat_u32(blob, "fsl,p1010-flexcan",
+			"clock-frequency", gd->bus_clk/2, 1);
 
 	fdt_fixup_usb(blob);
 }