ssb: add support for bcm5354

This patch adds support the the BCM5354 SoC.
It has a PMU and a constant not configurable clock.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/ssb/driver_mipscore.c b/drivers/ssb/driver_mipscore.c
index ced5015..7e2ddc0 100644
--- a/drivers/ssb/driver_mipscore.c
+++ b/drivers/ssb/driver_mipscore.c
@@ -208,6 +208,9 @@
 	struct ssb_bus *bus = mcore->dev->bus;
 	u32 pll_type, n, m, rate = 0;
 
+	if (bus->chipco.capabilities & SSB_CHIPCO_CAP_PMU)
+		return ssb_pmu_get_cpu_clock(&bus->chipco);
+
 	if (bus->extif.dev) {
 		ssb_extif_get_clockcontrol(&bus->extif, &pll_type, &n, &m);
 	} else if (bus->chipco.dev) {