clk: bcm2835: Correct the prediv logic

If a clock has the prediv flag set, both the integer and fractional
parts must be scaled when calculating the resulting frequency.
Signed-off-by: NPhil Elwell <phil@raspberrypi.org>
Signed-off-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>

drivers/clk/bcm/clk-bcm2835.c

@@ -616,8 +616,10 @@ static unsigned long bcm2835_pll_get_rate(struct clk_hw *hw,
 	using_prediv = cprman_read(cprman, data->ana_reg_base + 4) &
 		data->ana->fb_prediv_mask;
 
-	if (using_prediv)
+	if (using_prediv) {
 		ndiv *= 2;
+		fdiv *= 2;
+	}
 
 	return bcm2835_pll_rate_from_divisors(parent_rate, ndiv, fdiv, pdiv);
 }