vatrace: fix compile warnings and refine some format
vatrace: fix compile warnings and refine some format

Signed-off-by: Austin Yuan <shengquan.yuan@intel.com>
(cherry picked from commit d68c9fb7eebe195d96e113abbf654f782a1450d8)

Conflicts:

	va/va_trace.c

chenxianqin/vaapi-libva,gbeauchesne/libva,01org/iotg-lin-gfx-libva,01org/libva-cros,gbeauchesne/libva,01org/iotg-lin-gfx-libva,01org/iotg-lin-gfx-libva,zzhhui/libva,chenxianqin/vaapi-libva,pma1/libva,zzhhui/libva,01org/libva-cros,01org/libva-cros,pma1/libva,pma1/libva,zzhhui/libva,gbeauchesne/libva,chenxianqin/vaapi-libva