passpoint-r2: add trust anchors for WFA Passpoint Release 2.

It is required to authenticate OSU server with OSU Server certificate
singed with one of WFA trust anchors.

Bug: 112052266
Test: live test with Passpoint r2 AP
Change-Id: I01f498c875b067edd03a8bc008644281cb4ab1ff
Signed-off-by: Ecco Park <eccopark@google.com>