encore: include support for hwcomposer

Fixes issues with invalid private data size error

Change-Id: Ibd3ff5798335f6f553ae80629c04771915fac309

Conflicts:
	drivers/video/omap2/dsscomp/queue.c
Bump kernel version to 2.4

Change-Id: I9ac73c0c3e3cd9b53f8c523f8418b7fb9a7d05b9