pipe-loader: build llvmpipe on top of softpipe

One can select if they want to fallback to softpipe.
Current approach makes this not possible, whereas other
targets (dri-swrast) handle this approapriately.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

src/gallium/targets/pipe-loader/Makefile.am

@@ -148,16 +148,6 @@ pipe_vmwgfx_la_LDFLAGS += $(LLVM_LDFLAGS)
 endif
 endif
 
-if HAVE_GALLIUM_LLVMPIPE
-pipe_LTLIBRARIES += pipe_swrast.la
-pipe_swrast_la_SOURCES = pipe_swrast.c
-nodist_EXTRA_pipe_swrast_la_SOURCES = dummy.cpp
-pipe_swrast_la_LIBADD = \
-	$(PIPE_LIBS) \
-	$(top_builddir)/src/gallium/drivers/llvmpipe/libllvmpipe.la \
-	$(LLVM_LIBS)
-pipe_swrast_la_LDFLAGS = -no-undefined -avoid-version -module $(LLVM_LDFLAGS)
-else
 if HAVE_GALLIUM_SOFTPIPE
 pipe_LTLIBRARIES += pipe_swrast.la
 pipe_swrast_la_SOURCES = pipe_swrast.c
@@ -165,5 +155,12 @@ pipe_swrast_la_LIBADD = \
 	$(PIPE_LIBS) \
 	$(top_builddir)/src/gallium/drivers/softpipe/libsoftpipe.la
 pipe_swrast_la_LDFLAGS = -no-undefined -avoid-version -module
+if HAVE_GALLIUM_LLVMPIPE
+nodist_EXTRA_pipe_swrast_la_SOURCES = dummy.cpp
+
+pipe_swrast_la_LIBADD += \
+	$(top_builddir)/src/gallium/drivers/softpipe/libllvmpipe.la \
+	$(LLVM_LIBS)
+pipe_swrast_la_LDFLAGS += $(LLVM_LDFLAGS)
 endif
 endif