gallium: Add a couple more of D3D9 formats forgotten earlier.

src/gallium/include/pipe/p_format.h

@@ -185,6 +185,8 @@ enum pipe_format {
    PIPE_FORMAT_B10G10R10A2_UNORM       = 131,
    PIPE_FORMAT_R10SG10SB10SA2U_NORM    = 132,
    PIPE_FORMAT_R8G8Bx_SNORM            = 133,
+   PIPE_FORMAT_R8G8B8X8_UNORM          = 134,
+   PIPE_FORMAT_B4G4R4X4_UNORM          = 135,
 
    PIPE_FORMAT_COUNT
 };