Revert "Revert "Load native GLES driver when specified.""

This reverts commit 1d626138.

Reason for revert: Revert the revert to reland the patch. Original patch
was reverted due to rss memory regression. Attempt to reland the patch
with a fix, the original regression seems to be caused by usage of enum.

Original commit message:
"""
Load native GLES driver when specified.

Since ANGLE and native GLES drivers can coexist, when native is
specified, the loader must load the native GLES drivers specified in
ro.hardware.egl. This patch adds the support to load native GLES drivers
when specified.

Bug: b/283858001
Test: atest CtsAngleDeveloperOptionHostTest -c with ANGLE being default
Test: atest CtsAngleDeveloperOptionHostTest -c with native being default
"""
Bug: b/283858001
Test: atest CtsAngleDeveloperOptionHostTest -c with ANGLE being default
Test: atest CtsAngleDeveloperOptionHostTest -c with native being default

Change-Id: I6a2e716d340d9be3610c31abbcbe7984bf472f9f