Update GLES codegen to be in sync with frameworks/base

Patch from synergydev with commit-id 01994c79 changed
core/jni/com_google_android_gles_jni_GLImpl.cpp in the
frameworks/base. However the corresponding code snippet
in frameworks/native was not updated. This patch addresses
the issue.

Change-Id: I89c3d88de832efc8cbbe682c8a7ff7dfbef99db3
Signed-off-by: Ashok Bhat <ashok.bhat@arm.com>