Fix the following gles1-API implementation codes and some validation functions:
glClearColorx
glClearDepthx
glDepthRangex
glGetFixedv
glGetTexParameterxv
glLineWidthx
glPolygonOffsetx
glSampleCoveragex
glTexParameterx
glTexParameterxv
ValidateMaterialCommon
ValidateFogx
ValidateFogxv
ValidatePointSizex
ValidateRotatex
ValidateTexEnvx
ValidateTexEnvxv

Bug: angleproject:4281
Change-Id: Ia1d9e53c3ffde2bc77b7ca7eaa0d790e8ca43f10
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2075341
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>