Change GLSL->SPIR-V mapping of notEqual to OpFUnordNotEqual not OpFOrdNotEqual

Change GLSL->SPIR-V mapping of notEqual to OpFUnordNotEqual not OpFOrdNotEqual

The glslang compiler was changed in https://github.com/KhronosGroup/glslang/pull/2260
to generate OpFUnordNotEqual rather than OpFOrdNotEqual for a!=b.

Without this change the
KHR-GL46.gl_spirv.spirv_glsl_to_spirv_builtin_functions_test
test generates an InternalError because it can't find the
expected mapping.

Affects:

KHR-GL46.gl_spirv.spirv_glsl_to_spirv_builtin_functions_test

Change-Id: Ieda8dc02c0be90a7985b15ca28dbefb1a45cc7c1
Components: OpenGL