SAMA5D3/4 HEAP: Add a configuration option to reserve DRAM for a framebuffer when executing out of DRAM.

MXT Driver: Make sure that all return values are checked:  Fix worker thread -- it must hold the MXT device semaphore to access I2C

BCH: Add configurable AES encryption support to block-to-character (BCH) driver.  This allows any block device to be accessed as an encrypted character device.  From  Max Nekludov

NET: Important fix to the read-ahead buffer queue managment: Consumed bytes were being trimmed from the head of the queue, but the queue head itself was not being updated.  From Rony XLN