[lldbsuite] Fix TestBreakpointHitCount on Windows

Summary: On Windows, the newer DIA SDKs end up producing function names that contain the return type as well. This means that the function name returned in the test will contain the return type (int) in addition to the name of the function and the type of the input (a(int)). To account for the possibility of both, the test should pass if the function name matches either pattern.

Reviewers: zturner, asmith

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D48654

llvm-svn: 335906