Add av1_inverse_transform_block_facade

This function will apply av1_inverse_transform_block to
pd->dst.buf directly.

Change-Id: I703762c2d3cee2af626c190fe3b3995e3cce2082
diff --git a/av1/common/idct.h b/av1/common/idct.h
index 1d64c06..2d24efe 100644
--- a/av1/common/idct.h
+++ b/av1/common/idct.h
@@ -69,6 +69,8 @@
 void av1_inverse_transform_block(MACROBLOCKD *xd, const tran_low_t *dqcoeff,
                                  const TX_TYPE tx_type, const TX_SIZE tx_size,
                                  uint8_t *dst, int stride, int eob);
+void av1_inverse_transform_block_facade(MACROBLOCKD *xd, int plane, int block,
+                                        int blk_row, int blk_col, int eob);
 #if CONFIG_AOM_HIGHBITDEPTH
 void av1_highbd_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride,
                             int eob, int bd);