include/platform.h: PowerPC can also do unaligned access

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/include/platform.h b/include/platform.h
index a134a9e..2d3821c 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -200,7 +200,7 @@
 /* NB: unaligned parameter should be a pointer, aligned one -
  * a lvalue. This makes it more likely to not swap them by mistake
  */
-#if defined(i386) || defined(__x86_64__)
+#if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
 # include <stdint.h>
 typedef int      bb__aliased_int      FIX_ALIASING;
 typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;