Let hbd conv func be flexible

This CL allow us to change filter coefficients easily for SIMD
implementation of high bitdepth convolution functions

Change-Id: I454a5c76d3ba9e4454118c6a9d87737b3aa24898
diff --git a/av1/common/entropymode.c b/av1/common/entropymode.c
index f652cbe..8cf401e 100644
--- a/av1/common/entropymode.c
+++ b/av1/common/entropymode.c
@@ -2010,7 +2010,7 @@
 #if CONFIG_ADAPT_SCAN
   av1_init_scan_order(cm);
 #endif
-  av1_convolve_init();
+  av1_convolve_init(cm);
   cm->fc->initialized = 1;
 
   if (cm->frame_type == KEY_FRAME || cm->error_resilient_mode ||