[media] radio: use true/false for boolean vars

Instead of using 0 or 1 for boolean, use the true/false
defines.
Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/radio/radio-gemtek.c

@@ -332,7 +332,7 @@ static int __init gemtek_init(void)
 
 static void __exit gemtek_exit(void)
 {
-	hardmute = 1;	/* Turn off PLL */
+	hardmute = true;	/* Turn off PLL */
 #ifdef CONFIG_PNP
 	pnp_unregister_driver(&gemtek_driver.pnp_driver);
 #endif

drivers/media/radio/radio-sf16fmi.c

@@ -285,7 +285,7 @@ static int __init fmi_init(void)
 				io = isapnp_fmi_probe();
 				if (io < 0)
 					continue;
-				pnp_attached = 1;
+				pnp_attached = true;
 			}
 			if (!request_region(io, 2, "radio-sf16fmi")) {
 				if (pnp_attached)
@@ -349,7 +349,7 @@ static int __init fmi_init(void)
 	mutex_init(&fmi->lock);
 
 	/* mute card and set default frequency */
-	fmi->mute = 1;
+	fmi->mute = true;
 	fmi->curfreq = RSF16_MINFREQ;
 	fmi_set_freq(fmi);
 

drivers/media/radio/si470x/radio-si470x-common.c

@@ -208,7 +208,7 @@ static int si470x_set_band(struct si470x_device *radio, int band)
 static int si470x_set_chan(struct si470x_device *radio, unsigned short chan)
 {
 	int retval;
-	bool timed_out = 0;
+	bool timed_out = false;
 
 	/* start tuning */
 	radio->registers[CHANNEL] &= ~CHANNEL_CHAN;
@@ -300,7 +300,7 @@ static int si470x_set_seek(struct si470x_device *radio,
 {
 	int band, retval;
 	unsigned int freq;
-	bool timed_out = 0;
+	bool timed_out = false;
 
 	/* set band */
 	if (seek->rangelow || seek->rangehigh) {