[mpp_callback]: Optimize callback module

1. Move callback module to osal for later mpp_device callback.
2. Make callback command a pre-defined value to avoid include issue.
3. Separate callback cmd and param to separate header.

Change-Id: Ibd5cf11650a1cd2a326baddb82dc60fa1767ac87
Signed-off-by: Herman Chen <herman.chen@rock-chips.com>

mpp/codec/dec/h264/h264d_api.c

@@ -30,6 +30,7 @@
 #include "h264d_slice.h"
 #include "h264d_dpb.h"
 #include "h264d_init.h"
+#include "mpp_dec_cb_param.h"
 
 RK_U32 rkv_h264d_parse_debug = 0;