gfx → ps2 Relation

File in libretro-common/include/gfx	Includes file in ps2
math / matrix_3x3.h	include / math.h
math / matrix_4x4.h	include / math.h
math / vector_2.h	include / math.h
math / vector_3.h	include / math.h
math / vector_4.h	include / math.h