Add MIPS support to pixelflinger.

See the comment-block at the top of MIPSAssembler.cpp for
implementation overview.

Change-Id: Id492c10610574af8c89c38d19e12fafc3652c28a
diff --git a/libpixelflinger/codeflinger/load_store.cpp b/libpixelflinger/codeflinger/load_store.cpp
index 62aa05c..146fa52 100644
--- a/libpixelflinger/codeflinger/load_store.cpp
+++ b/libpixelflinger/codeflinger/load_store.cpp
@@ -110,7 +110,11 @@
 {
     const int maskLen = h-l;
 
+#ifdef __mips__
+    assert(maskLen<=11);
+#else
     assert(maskLen<=8);
+#endif
     assert(h);
     
 #if __ARM_ARCH__ >= 7