mm: push readahead to 512kB.

Change-Id: I5de81aa6cb08d4a09e7a440787e525c4370dbabd
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
scripts: add dtb tool

Change-Id: I90e4389caa319929bac1c6c7e6a005228f483f39
scripts: add mkboot

Change-Id: I2881c6accdcd4eaf48783d02a8d3705351368bc2