Refactor get_max_uv_txsize & get_adjusted_tx_size
Refactor get_max_uv_txsize & get_adjusted_tx_size

Change-Id: Idd851bcb59e7755f5275b2a8bf980a701bdf8d89

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