EGL 1.5 CreatePlatform*

EGL 1.5 CreatePlatform*

Add tests for eglCreatePlatformWindowSurface and
eglCreatePlatformPixmapSurface by refactoring tests for
the cooresponding extension functions to allow testing both
entry points.
For Android, add extension and platform tests to device
CAPABILITIES.

Affects:
dEQP-EGL.functional.create_surface.platform_ext_window.*
dEQP-EGL.functional.create_surface.platform_ext_pixmap.*
dEQP-EGL.functional.create_surface.platform_window.*
dEQP-EGL.functional.create_surface.platform_pixmap.*

Components: Framework, AOSP

VK-GL-CTS issue: 1178

Change-Id: Iaeccf1c6936fe41544b46ebf65aaa3c2d135ccbd