set LIBVPX_RAND with --enable-vp9-postproc, previously only the vp8
config was checked. this fixes the build with --disable-postproc.
Change-Id: Ia61baded6aa0e44d6443ae4a3c85915f1054f053
; On Android platforms use lrand48 when building postproc routines. Prior to L
; rand() was not available.
-%if CONFIG_POSTPROC=1
+%if CONFIG_POSTPROC=1 || CONFIG_VP9_POSTPROC=1
%ifdef __ANDROID__
extern sym(lrand48)
%define LIBVPX_RAND lrand48
extern sym(rand)
%define LIBVPX_RAND rand
%endif
-%endif ; CONFIG_POSTPROC
+%endif ; CONFIG_POSTPROC || CONFIG_VP9_POSTPROC