HID: hyperv: match wait_for_completion_timeout return type

The return type of wait_for_completion_timeout is unsigned long not
int. This patch fixes up the declarations only.

Patch was compile tested only for x86_64_defconfig + CONFIG_X86_VSMP=y
CONFIG_HYPERV=m, CONFIG_HID_HYPERV_MOUSE=m
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-hyperv.c

@@ -381,7 +381,7 @@ static void mousevsc_on_channel_callback(void *context)
 static int mousevsc_connect_to_vsp(struct hv_device *device)
 {
 	int ret = 0;
-	int t;
+	unsigned long t;
 	struct mousevsc_dev *input_dev = hv_get_drvdata(device);
 	struct mousevsc_prt_msg *request;
 	struct mousevsc_prt_msg *response;