swr: remove LLVM dependency from source generation rules.

The dependencies should not mention any files external to the project.
If we want to do sanity checks for the LLVM installed on the system we
should do that in configure, yet again where is the merit which header
gets checked and which doesn't ?

Cc: Tim Rowley <timothy.o.rowley@intel.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>

src/gallium/drivers/swr/Makefile.am

@@ -73,14 +73,14 @@ rasterizer/jitter/state_llvm.h: rasterizer/jitter/scripts/gen_llvm_types.py rast
 		--input $(srcdir)/rasterizer/core/state.h \
 		--output rasterizer/jitter/state_llvm.h
 
-rasterizer/jitter/builder_gen.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h
+rasterizer/jitter/builder_gen.h: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
 	$(PYTHON2) $(PYTHON_FLAGS) \
 		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
 		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \
 		--output rasterizer/jitter/builder_gen.h \
 		--gen_h
 
-rasterizer/jitter/builder_gen.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h
+rasterizer/jitter/builder_gen.cpp: rasterizer/jitter/scripts/gen_llvm_ir_macros.py
 	$(PYTHON2) $(PYTHON_FLAGS) \
 		$(srcdir)/rasterizer/jitter/scripts/gen_llvm_ir_macros.py \
 		--input $(LLVM_INCLUDEDIR)/llvm/IR/IRBuilder.h \