android: add support for r300g

Compile tested only.

Android.mk

@@ -24,7 +24,7 @@
 # BOARD_GPU_DRIVERS should be defined.  The valid values are
 #
 #   classic drivers:
-#   gallium drivers: swrast i915g r600g vmwgfx
+#   gallium drivers: swrast i915g r300g r600g vmwgfx
 #
 # The main target is libGLES_mesa.  There is no classic drivers yet.
 
@@ -36,7 +36,7 @@ DRM_TOP := external/drm
 DRM_GRALLOC_TOP := hardware/drm_gralloc
 
 classic_drivers :=
-gallium_drivers := swrast i915g r600g vmwgfx
+gallium_drivers := swrast i915g r300g r600g vmwgfx
 
 MESA_GPU_DRIVERS := $(BOARD_GPU_DRIVERS)
 
@@ -116,11 +116,16 @@ gallium_DRIVERS += libmesa_winsys_i915 libmesa_pipe_i915
 LOCAL_SHARED_LIBRARIES += libdrm_intel
 endif
 
-# r600g
-ifneq ($(filter r600g, $(MESA_GPU_DRIVERS)),)
+# r300g/r600g
+ifneq ($(filter r300g r600g, $(MESA_GPU_DRIVERS)),)
 gallium_DRIVERS += libmesa_winsys_radeon
+ifneq ($(filter r300g, $(MESA_GPU_DRIVERS)),)
+gallium_DRIVERS += libmesa_pipe_r300
+endif
+ifneq ($(filter r600g, $(MESA_GPU_DRIVERS)),)
 gallium_DRIVERS += libmesa_pipe_r600 libmesa_winsys_r600
 endif
+endif
 
 # vmwgfx
 ifneq ($(filter vmwgfx, $(MESA_GPU_DRIVERS)),)
@@ -131,6 +136,8 @@ endif
 # Notes about the order here:
 #
 #  * libmesa_st_egl depends on libmesa_winsys_sw_android in $(gallium_DRIVERS)
+#  * libmesa_pipe_r300 in $(gallium_DRIVERS) depends on libmesa_st_mesa and
+#    libmesa_glsl
 #  * libmesa_st_mesa depends on libmesa_glsl
 #  * libmesa_glsl depends on libmesa_glsl_utils
 #