Make a GLESv1 only entries for GLESv1 driver loading

This change creates a separate entry list for initializing gles1 apis
from the driver. With this change, the gl driver loading time for one
particular device reduced from ~180ms to ~40ms.

Bug: b/117526831
Test: dEQP-EGL.* and systrace on multiple devices
Change-Id: Ic2f6f1b8f4cd8f17db64b6e288769e2d6a7859eb
Merged-In: Ic2f6f1b8f4cd8f17db64b6e288769e2d6a7859eb