[MIPS - piet] Doug's fix for init running disk_prepare script.

Signed-off-by: Pete Delaney <piet.delaney@imgtec.com>
[MIPS - piet] Increase init service ingenic timeout to 100s.

Signed-off-by: Pete Delaney <piet.delaney@imgtec.com>
[MIPS] Re-enable OPenGL

Re-enable USE_OPENGL_RENDERER in Ingenic BoardConfig.mk

Need to export TARGET_GCC_VERSION_EXP=4.6 in AOSP Setup
for now with the current objects in $AOSP/hardware

Signed-off-by: Pete Delaney <piet.delaney@imgtec.com>