BuildManager: Provide context of earlier build steps to init

This information can be used to get information from earlier steps,
which e.g. queried for android devices to deploy to.

Change-Id: Iefe1c9443915cb6211f86f98ff7aaf3cb75145ba
Reviewed-by: Niels Weber <niels.weber@theqtcompany.com>

src/plugins/ios/iosdeploystep.cpp

@@ -97,8 +97,9 @@ void IosDeployStep::updateDisplayNames()
     setDisplayName(tr("Deploy to %1").arg(devName));
 }
 
-bool IosDeployStep::init()
+bool IosDeployStep::init(QList<const BuildStep *> &earlierSteps)
 {
+    Q_UNUSED(earlierSteps);
     QTC_ASSERT(m_transferStatus == NoTransfer, return false);
     m_device = DeviceKitInformation::device(target()->kit());
     IosRunConfiguration * runConfig = qobject_cast<IosRunConfiguration *>(