[media] usb/gspca/pac7311.c: use IS_ENABLED() macro

replace:
 #if defined(CONFIG_INPUT) || \
     defined(CONFIG_INPUT_MODULE)
with:
 #if IS_ENABLED(CONFIG_INPUT)
This change was made for: CONFIG_INPUT

Reported-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/gspca/pac7311.c

@@ -621,7 +621,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
 }
 
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+#if IS_ENABLED(CONFIG_INPUT)
 static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
 			u8 *data,		/* interrupt packet data */
 			int len)		/* interrupt packet length */
@@ -661,7 +661,7 @@ static const struct sd_desc sd_desc = {
 	.stopN = sd_stopN,
 	.pkt_scan = sd_pkt_scan,
 	.dq_callback = do_autogain,
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+#if IS_ENABLED(CONFIG_INPUT)
 	.int_pkt_scan = sd_int_pkt_scan,
 #endif
 };