clk: pxa: b bit of clkcfg means fast bus

The meaning of this bit was inverted :
 - when set to 0, system bus clock is half of the CPU run clock
 - when set to 1, system bus clock is the CPU run clock
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/pxa/clk-pxa27x.c

@@ -291,9 +291,9 @@ static unsigned long clk_pxa27x_system_bus_get_rate(struct clk_hw *hw,
 	if (osc_forced)
 		return parent_rate;
 	if (b)
-		return parent_rate / 2;
-	else
 		return parent_rate;
+	else
+		return parent_rate / 2;
 }
 
 static u8 clk_pxa27x_system_bus_get_parent(struct clk_hw *hw)