include/exec/user: Set ABI_LLONG_ALIGNMENT to 4 for microblaze

Based on gcc's microblaze.h setting BIGGEST_ALIGNMENT to 32 bits.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit e73f270)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

include/exec/user/abitypes.h

@@ -15,7 +15,9 @@
 #define ABI_LLONG_ALIGNMENT 2
 #endif
 
-#if (defined(TARGET_I386) && !defined(TARGET_X86_64)) || defined(TARGET_SH4)
+#if (defined(TARGET_I386) && !defined(TARGET_X86_64)) \
+    || defined(TARGET_SH4) \
+    || defined(TARGET_MICROBLAZE)
 #define ABI_LLONG_ALIGNMENT 4
 #endif