Add OWNERS in prebuilts/deqp

* Owners are selected from top CL approvals or owners.
  They will be suggested to review/approve future CLs.
* OWNERS files are recognized by the new find-owners plugin, see .md files in
  https://gerrit.googlesource.com/plugins/find-owners/+/master/src/main/resources/Documentation/

Test: build/make/tools/checkowners.py -c -v OWNERS
Change-Id: I950e71e3e83c628eab230c43773b8343be069bb9
1 file changed
tree: 944f7e9f1cca5647f85a0fc2b42b10512e3a2c40
  1. spirv/
  2. OWNERS
  3. README