dri: Add 32-bit RGBX/RGBA-SRGB formats
Add RGBX/RGBA-SRGB formats which are requried in Android to avoid balck screen issue of some android games which will call eglCreateWindowSurface with colorspace value set as EGL_GL_COLORSPACE_SRGB_KHR.
Signed-off-by: Xiaohui Gu xiaohui.gu@intel.com