d2-common: set dlmalloc alignment to 16-byte
credit: existz
Signed-off-by: Luis Cruz <ljc2491@gmail.com>

Change-Id: I66b923f580287a0f792c3e828c9be155620e563e
d2-common: cortex-a9 has 32 byte cache lines
credit: existz
Signed-off-by: Luis Cruz <ljc2491@gmail.com>

Change-Id: I7af7064006e8fc510c788780fced89ffab0239a8