defconfig: enable memutils optimisations

Change-Id: Id154b68bd69d822bef6ab93bf0dd5818f14a8ba6
Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>
defconfig: enable more tcp congestion avoidance algorithms

Change-Id: I50744fe54af598b89a92049771104cbea0ff077d
Signed-off-by: Zhao Wei Liew <zhaoweiliew@gmail.com>