xserver_xorg-server: Fix compile error for microblaze

Fixes
mipushpxl.c: In function 'miPushPixels':
mipushpxl.c:110:38: error: 'IMAGE_BYTE_ORDER' undeclared (first use in this function)
     if (screenInfo.bitmapBitOrder == IMAGE_BYTE_ORDER)

Patch submitted upstream: https://bugs.freedesktop.org/show_bug.cgi?id=83582

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

diff -uNr xorg-server-1.16.0.glyph/include/servermd.h xorg-server-1.16.0/include/servermd.h
--- xorg-server-1.16.0.glyph/include/servermd.h	2014-09-07 11:32:34.297332811 +0200
+++ xorg-server-1.16.0/include/servermd.h	2014-09-07 11:31:33.470099995 +0200
@@ -176,6 +176,18 @@
 
 #endif                          /* mips */
 
+#if defined(__microblaze__) || defined(microblaze)
+
+#ifdef __BIG_ENDIAN__
+#define IMAGE_BYTE_ORDER	MSBFirst
+#define BITMAP_BIT_ORDER	MSBFirst
+#else
+#define IMAGE_BYTE_ORDER	LSBFirst
+#define BITMAP_BIT_ORDER	LSBFirst
+#endif
+
+#endif
+
 #if defined(__alpha) || defined(__alpha__)
 #define IMAGE_BYTE_ORDER	LSBFirst        /* Values for the Alpha only */
 #define BITMAP_BIT_ORDER       LSBFirst