ETC2 and EAC are part of the core featureset of OpenGL ES 3.0. They have no need to expose the extensions unless they are allowing support for them in OpenGL ES 2.0.
Considering Qualcomm auto-promotes a OpenGL ES 2.0 context to 3.0 it doesn't really matter for them.
As for ASTC, that isn't a core feature of any OpenGL version, so don't expect Qualcomm to go out of their way to implement it for anyone.
Considering Qualcomm auto-promotes a OpenGL ES 2.0 context to 3.0 it doesn't really matter for them.
As for ASTC, that isn't a core feature of any OpenGL version, so don't expect Qualcomm to go out of their way to implement it for anyone.