Add tex2d half float tests to expectations file GL_HALF_FLOAT and GL_HALF_FLOAT_OES have different values and only the latter is valid in GLES 2.0. However, angle_deqp_khr_gles2_tests expects these two enums to be treated as interchangable. This is a bug in deqp, so the affected tests should be expected to fail until the bug is fixed. Bug: angleproject:3451 Test: dEQP.KHR_GLES2/core_internalformat_texture2d_*_half_float_* Change-Id: If3a8078e592b18c60c883dfebd246435761a4423 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1743051 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>