OMAP4-Common: Get rid of TARGET_HAS_WAITFORVSYNC

Port from https://gerrit.omnirom.org/#/c/4675/
Solve OC-Problems / OC-Break

Tuxafgmur: OC problems is generated by code in
/device/samsung/omap4-common/libpower/power.c
which also was (bad coded?) for the interactive controller.