powerpc/t4240: Add a frequency setting case for fman1

A new valid setting case added for fman1, it uses platform frequency.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/speed.c b/arch/powerpc/cpu/mpc85xx/speed.c
index 46ae80c..7c7467f 100644
--- a/arch/powerpc/cpu/mpc85xx/speed.c
+++ b/arch/powerpc/cpu/mpc85xx/speed.c
@@ -229,6 +229,9 @@
 	case 4:
 		sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK + 1] / 4;
 		break;
+	case 5:
+		sys_info->freq_fman[1] = sys_info->freq_systembus;
+		break;
 	case 6:
 		sys_info->freq_fman[1] = freq_c_pll[CONFIG_SYS_FM2_CLK] / 2;
 		break;