gallium/sw/kms: trivial cleanups
gallium/sw/kms: trivial cleanups

Remove the forward declaration and make use of the DEBUG_PRINT macro for
debug builds.

Signed-off-by: Emil Velikov <4c996f2f093ddd0585a556460b4cc3ba555546ef@gmail.com>
Reviewed-by: Brian Paul <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@vmware.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler