surfacetexture: Add option for choosing texture target on old Adrenos

Commit 417d8925 removed a workaround for
old Adreno drivers which are not optimized for GL_TEXTURE_EXTERNAL_OES.
This causes performance issues for some platforms. Add a compile time
option to enable this.

Change-Id: I3389c7c4cc997b21d1ddb445262ac184ff37e598