CR50: move platform independent stub calls back to third_party

Move _math__Comp and _math__uComp from stubs.c back to
third_party/tpm2 as they are platform independent.

BRANCH=none
BUG=chrome-os-partner:43025,chrome-os-partner:47524
CQ-DEPEND=CL:330855
TEST=compilation succeeds

Change-Id: I2a1611e0b264720d71ac1fa0935cfa2498e04fdc
Signed-off-by: nagendra modadugu <ngm@google.com>
Reviewed-on: https://chromium-review.googlesource.com/330951
Commit-Ready: Nagendra Modadugu <ngm@google.com>
Tested-by: Nagendra Modadugu <ngm@google.com>
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
1 file changed