gallium: include util/macros.h
gallium: include util/macros.h

The most common macros are defined there, no use to duplicate these
Clean up the already redefinded macros

Signed-off-by: Tobias Klausmann <694fb395a4e886b29a8a86dfcf2bcf3dfc9710a7@mni.thm.de>
Reviewed-by: Eric Anholt <96f164ad4d9b2b0dacf8ebee2bb1eeb3aa69adf1@anholt.net>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler