cortex-m: no need to keep a special term for Tpm2_ modules
cortex-m: no need to keep a special term for Tpm2_ modules

With tpm2 makefile now re-naming .bss section in the produced objects,
there is need to try grouping files by module name, especially since
this does not even work when linking object modules directly instead
of the library.

BRANCH=cr50, cr50-mp
BUG=b:65253310
TEST=make BOARD=cr50 -j produces an image with the same _bss_libtpm2
     section.

Change-Id: I38f8ec3efa0364a0ad58781b7822a0eb52b636bb
Signed-off-by: Vadim Bendebury <5515d6d2d0829cbe0dd0dcf2094aaded06d58514@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1457602
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec