build: Remove libws_null.la from GALLIUM_PIPE_LOADER_LIBS.

Tested-by: Tom Stellard <thomas.stellard@amd.com>
Tested-by: Aaron Watry <awatry@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

configure.ac

@@ -1915,7 +1915,6 @@ if test "x$enable_gallium_loader" = xyes; then
     GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/null"
     GALLIUM_PIPE_LOADER_DEFINES="-DHAVE_PIPE_LOADER_SW"
     GALLIUM_PIPE_LOADER_LIBS="\$(top_builddir)/src/gallium/auxiliary/pipe-loader/libpipe_loader.la"
-    GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(top_builddir)/src/gallium/winsys/sw/null/libws_null.la"
 
     if test "x$NEED_WINSYS_XLIB" = xyes; then
         GALLIUM_PIPE_LOADER_LIBS="$GALLIUM_PIPE_LOADER_LIBS \$(top_builddir)/src/gallium/winsys/sw/xlib/libws_xlib.la"

src/gallium/targets/gbm/Makefile.am

@@ -43,6 +43,7 @@ gbm_gallium_drm_la_SOURCES = gbm.c
 
 gbm_gallium_drm_la_LIBADD = \
 	$(GALLIUM_PIPE_LOADER_LIBS) \
+	$(top_builddir)/src/gallium/winsys/sw/null/libws_null.la \
 	$(top_builddir)/src/gallium/state_trackers/gbm/libgbm.la \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
 	$(LIBUDEV_LIBS) \

src/gallium/targets/opencl/Makefile.am

@@ -7,6 +7,7 @@ libOpenCL_la_LDFLAGS = \
 	-version-number 1:0
 
 libOpenCL_la_LIBADD = \
+	$(top_builddir)/src/gallium/winsys/sw/null/libws_null.la \
 	$(top_builddir)/src/gallium/state_trackers/clover/libclover.la \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
 	$(GALLIUM_PIPE_LOADER_LIBS) $(LIBUDEV_LIBS) \

src/gallium/tests/trivial/Makefile.am

@@ -12,6 +12,7 @@ AM_CPPFLAGS = \
 	$(GALLIUM_PIPE_LOADER_DEFINES)
 
 LDADD = $(GALLIUM_PIPE_LOADER_LIBS) \
+	$(top_builddir)/src/gallium/winsys/sw/null/libws_null.la \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
 	$(LIBUDEV_LIBS) \
 	$(DLOPEN_LIBS) \