git: drop bits merged upstream

Signed-off-by: Christopher Larson <kergoth@gmail.com>
valgrind: drop bits not needed for 3.9.0

Signed-off-by: Christopher Larson <kergoth@gmail.com>
sstate.bbclass: update to 325fb2b

Signed-off-by: Christopher Larson <kergoth@gmail.com>