This change allows all formats in the GLES 1.1 spec, table 3.4
to be used as a texture attachment.

Also normalize values passed into glColorPointer if the format
is of type GL_UNSIGNED_BYTE.

These changes are needed for the android app, Kick the Buddy
to render correctly.

Bug: angleproject:5599
Tests: *DrawTextureTest.ColorArrayDifferentTypes*
       *FramebufferObjectTest.TextureObjectDifferentFormats*
Change-Id: Ie9d27fc24d94106651262cf9b2080dd3f05af1c5
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2690920
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>