[libunwind][ARM] Fix types in _Unwind_VRS_Get.

This is a small fix for https://reviews.llvm.org/D64996. The types of
w0 and w1 in _Unwind_VRS_Get must be uint64_t, not uint32_t.

Committing as obvious.

llvm-svn: 366701
GitOrigin-RevId: b64b9009628d2ab9c24cfc2894fe55b7786c5f25
1 file changed