greybus: arche-platform: reduce wait between WAKE_OUT checks

SVC WAKE_OUT loop is estimated 400ms during which wake_detect line
is pulled low for AP detection.  On AP side we have 500ms delay
between checks.  To avoid timing issues, reduce delay between
checks and raise total # of checks so that overall time for sequence
is the same.

Testing Done:
- Used for DB3.5/EVT1.5 hardware during bringup
- Regression tested on DB3.1+ES2, DB3.1+ES3
Signed-off-by: Michael Scott <michael.scott@linaro.org>
Reviewed-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Tested-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/arche-platform.c

@@ -52,7 +52,7 @@ static void svc_delayed_work(struct work_struct *work)
 		container_of(work, struct arche_platform_drvdata, delayed_work.work);
 	struct device *dev = arche_pdata->dev;
 	struct device_node *np = dev->of_node;
-	int timeout = 10;
+	int timeout = 50;
 	int ret;
 
 	/*
@@ -74,7 +74,7 @@ static void svc_delayed_work(struct work_struct *work)
 		if (gpio_get_value(arche_pdata->wake_detect_gpio) == 0)
 			break;
 
-		msleep(500);
+		msleep(100);
 	} while(timeout--);
 
 	if (timeout >= 0) {