Already exists upstream.
--- mozilla-esr31/gfx/skia/trunk/include/core/SkPreConfig.h.orig 2015-06-04 17:42:51.687614279 -0700
+++ mozilla-esr31/gfx/skia/trunk/include/core/SkPreConfig.h 2015-06-04 17:42:51.689910035 -0700
@@ -93,7 +93,7 @@
#if !defined(SK_CPU_BENDIAN) && !defined(SK_CPU_LENDIAN)
#if defined (__ppc__) || defined(__PPC__) || defined(__ppc64__) \
- || defined(__PPC64__)
+ || defined(__PPC64__) || defined(__sparc) || defined(__sparc__)
#define SK_CPU_BENDIAN
#else
#define SK_CPU_LENDIAN