[TBD] Update test to account for iOS device vs. iOS simulator.

The test was only checking iOS, and assuming that simulator targets
would behave the same way. Make the test amenable to both iOS and
iOS simulator.

Author: DougGregor

test/TBD/Inputs/install-name-map-toasterkit.json

@@ -7,6 +7,6 @@
   {
     "module": "ToasterKit",
     "install_name": "/System/Previous/iOS/ToasterKit.dylib",
-    "platforms": ["iOS"]
+    "platforms": ["iOS", "iOS_sim"]
   }
-]
+]

test/TBD/linker-directives-ld-previous-ios.swift

@@ -3,12 +3,18 @@
 // RUN: %empty-directory(%t)
 
 // RUN: %target-swift-frontend -typecheck %S/Inputs/linker-directive.swift -tbd-is-installapi -emit-tbd -emit-tbd-path %t/linker_directives.tbd -previous-module-installname-map-file %S/Inputs/install-name-map-toasterkit.json
-// RUN: %FileCheck %s < %t/linker_directives.tbd
+// RUN: %FileCheck --check-prefix=CHECK-objc-simulator-%target-is-simulator %s < %t/linker_directives.tbd
 // RUN: %target-swift-frontend -typecheck %S/Inputs/linker-directive.swift -emit-tbd -emit-tbd-path %t/linker_directives.tbd -previous-module-installname-map-file %S/Inputs/install-name-map-toasterkit.json
-// RUN: %FileCheck %s < %t/linker_directives.tbd
+// RUN: %FileCheck --check-prefix=CHECK-objc-simulator-%target-is-simulator %s <  %t/linker_directives.tbd
 
-// CHECK: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit5toastyyF$
-// CHECK: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleV4moveyyF$
-// CHECK: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVMa$
-// CHECK: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVMn$
-// CHECK: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVN$
+// CHECK-objc-simulator-false: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit5toastyyF$
+// CHECK-objc-simulator-false: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleV4moveyyF$
+// CHECK-objc-simulator-false: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVMa$
+// CHECK-objc-simulator-false: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVMn$
+// CHECK-objc-simulator-false: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$2$10.2$13.0$_$s10ToasterKit7VehicleVN$
+
+// CHECK-objc-simulator-true: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$7$10.2$13.0$_$s10ToasterKit5toastyyF$
+// CHECK-objc-simulator-true: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$7$10.2$13.0$_$s10ToasterKit7VehicleV4moveyyF$
+// CHECK-objc-simulator-true: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$7$10.2$13.0$_$s10ToasterKit7VehicleVMa$
+// CHECK-objc-simulator-true: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$7$10.2$13.0$_$s10ToasterKit7VehicleVMn$
+// CHECK-objc-simulator-true: $ld$previous$/System/Previous/iOS/ToasterKit.dylib$$7$10.2$13.0$_$s10ToasterKit7VehicleVN$