hammerhead: switch back to dlmalloc

Experiment for a while with hammerhead switched back to dlmalloc (from
jemalloc), on the theory that jemalloc was contributing to excessive
page-allocator fragmentation. We will revisit this after the holidays once we
have data from users.

b/18069309 N5 running L can't run as many apps simultaneously as running K

Change-Id: If69ddc33181e133045ffc1a6d98cdfc76078b388
Signed-off-by: Iliyan Malchev <malchev@google.com>
1 file changed