[media] rc: img-ir: hw: Fix min/max bits setup

The calculated values for the minlen and maxlen fields, which were
rounded to multiples of 2 and clamped to a valid range, were left
unused. Use them in the calculation of the register value rather than
using the raw input minlen and maxlen.

This fixes the following warning with a W=1 build:
drivers/media/rc/img-ir/img-ir-hw.c In function ‘img_ir_free_timing’:
drivers/media/rc/img-ir/img-ir-hw.c +228 :23: warning: variable ‘maxlen’ set but not used [-Wunused-but-set-variable]
drivers/media/rc/img-ir/img-ir-hw.c +228 :15: warning: variable ‘minlen’ set but not used [-Wunused-but-set-variable]
Reported-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/rc/img-ir/img-ir-hw.c

@@ -240,9 +240,9 @@ static u32 img_ir_free_timing(const struct img_ir_free_timing *timing,
 	ft_min = (timing->ft_min*clock_hz + 999999) / 1000000;
 	ft_min = (ft_min + 7) >> 3;
 	/* construct register value */
-	return	(timing->maxlen	<< IMG_IR_MAXLEN_SHIFT)	|
-		(timing->minlen	<< IMG_IR_MINLEN_SHIFT)	|
-		(ft_min		<< IMG_IR_FT_MIN_SHIFT);
+	return	(maxlen << IMG_IR_MAXLEN_SHIFT)	|
+		(minlen << IMG_IR_MINLEN_SHIFT)	|
+		(ft_min << IMG_IR_FT_MIN_SHIFT);
 }
 
 /**