ac/llvm: add i1false/i1true to common code.

These get used in fair few places.

Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

src/amd/common/ac_llvm_build.h

@@ -60,6 +60,8 @@ struct ac_llvm_context {
 	LLVMValueRef i32_1;
 	LLVMValueRef f32_0;
 	LLVMValueRef f32_1;
+	LLVMValueRef i1true;
+	LLVMValueRef i1false;
 
 	unsigned range_md_kind;
 	unsigned invariant_load_md_kind;