[backend-v10] make sure framebuffer module is loaded when we load the hwcomposer module

Some hwcomposer implementations rely on the framebuffer module already loaded. The
implementation for the Samsung Galaxy Nexus for example fails with:

Dec 31 17:18:49 maguro luna-next[1143]: == hwcomposer module ==
Dec 31 17:18:49 maguro luna-next[1143]: * Address: 0x43a6d008
Dec 31 17:18:49 maguro luna-next[1143]: * Module API Version: 1
Dec 31 17:18:49 maguro luna-next[1143]: * HAL API Version: 100
Dec 31 17:18:49 maguro luna-next[1143]: * Identifier: hwcomposer
Dec 31 17:18:49 maguro luna-next[1143]: * Name: OMAP 44xx Hardware Composer HAL
Dec 31 17:18:49 maguro luna-next[1143]: * Author: Texas Instruments
Dec 31 17:18:49 maguro luna-next[1143]: == hwcomposer module ==
Dec 31 17:18:49 maguro luna-next[1143]: QPA-HWC: hwc_module->methods->open(hwc_module,
HWC_HARDWARE_COMPOSER, &hwc_device) in create returned -14

Signed-off-by: Simon Busch <morphis@gravedo.de>
[backend-v10] enable/disable vsync when setting display sleep state

Signed-off-by: Simon Busch <morphis@gravedo.de>
Merge pull request #6 from webOS-ports/v10-work

Modifications for v10 backend to get it working on omap4 based platforms