r600g: share the source list

Factor out C_SOURCES from Makefile to Makefile.sources, and let
Makefile and SConscript share it.

Reviewed-by: Marek Olšák <maraeo@gmail.com>

src/gallium/drivers/r600/Makefile

@@ -6,20 +6,7 @@ LIBNAME = r600
 LIBRARY_INCLUDES = \
 	$(shell pkg-config libdrm --cflags-only-I)
 
-C_SOURCES = \
-	r600_asm.c \
-	r600_blit.c \
-	r600_buffer.c \
-	r600_pipe.c \
-	r600_query.c \
-	r600_resource.c \
-	r600_shader.c \
-	r600_state.c \
-	r600_texture.c \
-	r700_asm.c \
-	evergreen_state.c \
-	eg_asm.c \
-	r600_translate.c \
-	r600_state_common.c
+# get C_SOURCES
+include Makefile.sources
 
 include ../../Makefile.template

src/gallium/drivers/r600/Makefile.sources

@@ -0,0 +1,15 @@
+C_SOURCES := \
+	r600_asm.c \
+	r600_blit.c \
+	r600_buffer.c \
+	r600_pipe.c \
+	r600_query.c \
+	r600_resource.c \
+	r600_shader.c \
+	r600_state.c \
+	r600_texture.c \
+	r700_asm.c \
+	evergreen_state.c \
+	eg_asm.c \
+	r600_translate.c \
+	r600_state_common.c

src/gallium/drivers/r600/SConscript

@@ -11,22 +11,8 @@ env.Append(CPPPATH = [
 
 r600 = env.ConvenienceLibrary(
     target = 'r600',
-    source = [
-        'r600_asm.c',
-        'r600_buffer.c',
-        'r600_blit.c',
-        'r600_pipe.c',
-        'r600_query.c',
-        'r600_resource.c',
-        'r600_shader.c',
-        'r600_state.c',
-        'r600_state_common.c',
-        'r600_texture.c',
-        'r600_translate.c',
-        'r700_asm.c',
-        'evergreen_state.c',
-        'eg_asm.c',
-    ])
+    source = env.ParseSourceList('Makefile.sources', 'C_SOURCES')
+    )
 
 env.Alias('r600', r600)