fastboot: Add elsk@ to OWNERS file

Also, remove hridya@ from the OWNERS file

Test: N/A
Bug: N/A
Change-Id: I1d5a03ebf9e2e93f555474a6a654e16879b8e96a
diff --git a/fastboot/OWNERS b/fastboot/OWNERS
index 58b2a81..17b3466 100644
--- a/fastboot/OWNERS
+++ b/fastboot/OWNERS
@@ -1,3 +1,3 @@
 dvander@google.com
-hridya@google.com
+elsk@google.com
 enh@google.com