The EGL integration is vendor specific, add platform hooks to the
DirectFB plugin and implement them for the Broadcom 97425. The hook
interface is internal and there are no ABI/API gurantees.
Change-Id: I33359830c51f16895e771837fccb71e03c81cf18
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
