spice: fix simple display on bigendian hosts

Denis Kirjanov is busy getting spice run on ppc64 and trapped into this
one.  Spice wire format is little endian, so we have to explicitly say
we want little endian when letting pixman convert the data for us.
Reported-by: NDenis Kirjanov <kirjanov@gmail.com>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

include/ui/qemu-pixman.h

@@ -35,6 +35,7 @@
 # define PIXMAN_BE_r8g8b8a8   PIXMAN_r8g8b8a8
 # define PIXMAN_BE_x8b8g8r8   PIXMAN_x8b8g8r8
 # define PIXMAN_BE_a8b8g8r8   PIXMAN_a8b8g8r8
+# define PIXMAN_LE_x8r8g8b8   PIXMAN_b8g8r8x8
 #else
 # define PIXMAN_BE_r8g8b8     PIXMAN_b8g8r8
 # define PIXMAN_BE_x8r8g8b8   PIXMAN_b8g8r8x8
@@ -45,6 +46,7 @@
 # define PIXMAN_BE_r8g8b8a8   PIXMAN_a8b8g8r8
 # define PIXMAN_BE_x8b8g8r8   PIXMAN_r8g8b8x8
 # define PIXMAN_BE_a8b8g8r8   PIXMAN_r8g8b8a8
+# define PIXMAN_LE_x8r8g8b8   PIXMAN_x8r8g8b8
 #endif
 
 /* -------------------------------------------------------------------- */

ui/spice-display.c

@@ -178,7 +178,7 @@ static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd,
     image->bitmap.palette = 0;
     image->bitmap.format = SPICE_BITMAP_FMT_32BIT;
 
-    dest = pixman_image_create_bits(PIXMAN_x8r8g8b8, bw, bh,
+    dest = pixman_image_create_bits(PIXMAN_LE_x8r8g8b8, bw, bh,
                                     (void *)update->bitmap, bw * 4);
     pixman_image_composite(PIXMAN_OP_SRC, ssd->surface, NULL, ssd->mirror,
                            rect->left, rect->top, 0, 0,