Add more members to ART's OWNERS file.

Test: build/make/tools/checkowners.py -c art/OWNERS
Change-Id: I44b989348156728b1a68a23646a4bfb376552cd4
diff --git a/OWNERS b/OWNERS
index 1d8d2ba..f9f6035 100644
--- a/OWNERS
+++ b/OWNERS
@@ -3,13 +3,16 @@
 jiakaiz@google.com
 lokeshgidra@google.com
 mast@google.com
+miguelaranda@google.com
 mingaleev@google.com
+mythria@google.com
 ngeoffray@google.com
 nikitai@google.com
 oth@google.com
 prb@google.com
 rpl@google.com
 skvadrik@google.com
+solanes@google.com
 sorinbasca@google.com
 vichang@google.com
 vmarko@google.com