rdopt: make ADST_FLIP_SVM array static
rdopt: make ADST_FLIP_SVM array static

Change-Id: Iec280ba1e314849ac027085f61e62a48dd224be4

GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom