Add rpath test cases for Catalyst.

Author: varungandhi-apple

test/Driver/linker-rpath.swift

@@ -17,6 +17,10 @@
 // RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-ios14 %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s
 // RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-ios15 %S/../Inputs/empty.swift | %FileCheck -check-prefix NO-RPATH %s
 
+// RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-ios13-macabi %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s
+// RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-ios14-macabi %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s
+// RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-ios15-macabi %S/../Inputs/empty.swift | %FileCheck -check-prefix NO-RPATH %s
+
 // RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-tvos12 %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s
 // RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-tvos12.1 %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s
 // RUN: %swiftc_driver_plain -driver-print-jobs -target arm64-apple-tvos12.2 %S/../Inputs/empty.swift | %FileCheck -check-prefix RPATH %s