[ARM] S3C24XX: pwm-clock set_parent mask fix

Fix s3c24xx pwm-clock supports use of the wrong clock when calculating
the bitmask when configuring the parent clock from the set_parent call.
Signed-off-by: NDallas Foley <dfoley@techsol.ca>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c24xx/pwm-clock.c

@@ -315,7 +315,7 @@ static int clk_pwm_tin_set_parent(struct clk *clk, struct clk *parent)
 	if (parent == s3c24xx_pwmclk_tclk(id))
 		bits = S3C2410_TCFG1_MUX_TCLK << shift;
 	else if (parent == s3c24xx_pwmclk_tdiv(id))
-		bits = clk_pwm_tdiv_bits(to_tdiv(clk)) << shift;
+		bits = clk_pwm_tdiv_bits(to_tdiv(parent)) << shift;
 	else
 		return -EINVAL;