[media] dvb-frontends/stv0367: print CPAMP status only if stv_debug is enabled

The CPAMP log lines generated in stv0367_ter_check_cpamp() are printed
everytime tuning succeeds or fails, quite cluttering the normal kernel log.
Use dprintk() instead of printk(KERN_ERR...) so that if the information is
needed, it'll be printed when the stv_debug modparam is enabled.

Signed-off-by: Daniel Scheller <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/dvb-frontends/stv0367.c

···
 	dprintk("******last CPAMPvalue= %d at wd=%d\n", CPAMPvalue, wd);
 	if (CPAMPvalue < CPAMPMin) {
 		CPAMPStatus = FE_TER_NOCPAMP;
-		printk(KERN_ERR "CPAMP failed\n");
+		dprintk("%s: CPAMP failed\n", __func__);
 	} else {
-		printk(KERN_ERR "CPAMP OK !\n");
+		dprintk("%s: CPAMP OK !\n", __func__);
 		CPAMPStatus = FE_TER_CPAMPOK;
 	}