dixie: fix 64 bit integer promotion issue.

Change-Id: I8efbed8fc79f9c1da3c84434c5b54c5100cbff0b

vp8/dixie/modemv.c

@@ -578,9 +578,9 @@ decode_mvs(struct vp8_decoder_ctx       *ctx,
 void
 vp8_dixie_modemv_process_row(struct vp8_decoder_ctx *ctx,
                              struct bool_decoder    *bool,
-                             unsigned int            row,
-                             unsigned int            start_col,
-                             unsigned int            num_cols)
+                             int                     row,
+                             int                     start_col,
+                             int                     num_cols)
 {
     struct mb_info       *above, *this;
     unsigned int          col;

vp8/dixie/modemv.h

@@ -17,8 +17,8 @@ vp8_dixie_modemv_init(struct vp8_decoder_ctx *ctx);
 void
 vp8_dixie_modemv_process_row(struct vp8_decoder_ctx *ctx,
                              struct bool_decoder    *bool,
-                             unsigned int            row,
-                             unsigned int            start_col,
-                             unsigned int            num_cols);
+                             int                     row,
+                             int                     start_col,
+                             int                     num_cols);
 
 #endif