[media] Rename all public generic RC functions from ir_ to rc_

Those functions are not InfraRed specific. So, rename them to properly
reflect it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/dvb-usb/anysee.c b/drivers/media/dvb/dvb-usb/anysee.c
index c6e4ba5..5e12488 100644
--- a/drivers/media/dvb/dvb-usb/anysee.c
+++ b/drivers/media/dvb/dvb-usb/anysee.c
@@ -394,7 +394,7 @@
 
 	if (ircode[0]) {
 		deb_rc("%s: key pressed %02x\n", __func__, ircode[1]);
-		ir_keydown(d->rc_dev, 0x08 << 8 | ircode[1], 0);
+		rc_keydown(d->rc_dev, 0x08 << 8 | ircode[1], 0);
 	}
 
 	return 0;