[Sampling profiler] Include AsmGetRegs asm functions on x86/x64

The AsmGetRegsX86.S/AsmGetRegsX86_64.S files are required to link
libunwindstack on x86/x64. These are pulled from android-q-preview-6,
the tag referenced in the README.chromium.

Bug: 1004855
Change-Id: Idd578ae49eab808fef575f5d270b67e2888c4174
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/third_party/libunwindstack/+/2209311
Reviewed-by: Etienne Pierre-Doray <etiennep@chromium.org>
3 files changed
tree: 8daa6c6427bba6b3f477772229cce9f4337f8444
  1. .clang-format
  2. BUILD.gn
  3. LICENSE
  4. OWNERS
  5. README.chromium
  6. patches/
  7. src/
  8. tools/