Qbs: generate correct architecture name for iOS armv7.

Task-number: QBS-839
Change-Id: I535992feb2dd4db9f30dc1458b4c6a156a26849f
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>

src/plugins/qbsprojectmanager/defaultpropertyprovider.cpp

@@ -190,6 +190,9 @@ QVariantMap DefaultPropertyProvider::autoGeneratedProperties(const ProjectExplor
             default:
                 break;
             }
+        } else if (targetAbi.architecture() == ProjectExplorer::Abi::ArmArchitecture &&
+                   targetAbi.os() == ProjectExplorer::Abi::MacOS) {
+            architecture.append(QLatin1String("v7"));
         }
 
         data.insert(QLatin1String(QBS_ARCHITECTURE), qbs::canonicalArchitecture(architecture));