gwp_asan_headers is marked as available to platform

The header lib is depended on by gwp_asan which is available to
platform. With b/153073816 we will be checking the availability to the
platform, i.e. platform-available module depending on
platform-unavailable module causes a build error.

Prepare for the change by correctly marking that gwp_asan_headers is
available to the platform.

Bug: 153073816
Test: m
Merged-In: I7cee3e2d21755ecbb08dcba8f365428a3c87c659
(cherry picked from commit e32bc115cc229756e981a8bd3511e850235c3d59)
Change-Id: I7cee3e2d21755ecbb08dcba8f365428a3c87c659
1 file changed