ARM: OMAP: add SoSSI clock (call propagate_rate for childrens)

Clocks with the follow parent rate mode were not updating their
children at propagate rate time.
Signed-off-by: NImre Deak <imre.deak@solidboot.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/plat-omap/clock.c

@@ -284,6 +284,8 @@ void followparent_recalc(struct clk *clk)
 		return;
 
 	clk->rate = clk->parent->rate;
+	if (unlikely(clk->flags & RATE_PROPAGATES))
+		propagate_rate(clk);
 }
 
 /* Propagate rate to children */