powerpc/85xx: add missing QMAN frequency calculation

When CONFIG_SYS_FSL_QORIQ_CHASSIS2 is not defined, QMAN frequency will not
be initialized, and QMAN will have a wrong frequency display.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

arch/powerpc/cpu/mpc85xx/speed.c

@@ -293,6 +293,10 @@ void get_sys_info (sys_info_t * sysInfo)
 #endif
 #endif
 
+#ifdef CONFIG_SYS_DPAA_QBMAN
+	sysInfo->freqQMAN = sysInfo->freqSystemBus / 2;
+#endif
+
 #endif /* CONFIG_SYS_FSL_QORIQ_CHASSIS2 */
 
 #else /* CONFIG_FSL_CORENET */