sna and uxa: build *_present.c files

Partially revert #56, because driver refers to *_present_open
symbols and they needed for functionality.

Signed-off-by: Tautvis <gtautvis@gmail.com>

src/sna/meson.build

@@ -83,6 +83,9 @@ if with_dri3
   sna_deps += dri3
 endif
 
+sna_sources += 'sna_present.c'
+sna_deps += present
+
 if with_xvmc
   sna_sources += 'sna_video_hwmc.c'
 endif

src/uxa/meson.build

@@ -44,6 +44,8 @@ if with_dri3
   ]
 endif
 
+uxa_sources += 'intel_present.c'
+
 if with_xvmc
   uxa_sources += 'intel_hwmc.c'
 endif