libvpx: Pull from upstream

source/config/linux/generic/vp9_rtcd.h

Index: source/config/linux/generic/vp9_rtcd.h
===================================================================
--- source/config/linux/generic/vp9_rtcd.h	(revision 261575)
+++ source/config/linux/generic/vp9_rtcd.h	(working copy)
@@ -224,6 +224,9 @@
 unsigned int vp9_get_mb_ss_c(const int16_t *);
 #define vp9_get_mb_ss vp9_get_mb_ss_c
 
+void vp9_get_sse_sum_16x16_c(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, int ref_stride, unsigned int *sse, int *sum);
+#define vp9_get_sse_sum_16x16 vp9_get_sse_sum_16x16_c
+
 void vp9_get_sse_sum_8x8_c(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, int ref_stride, unsigned int *sse, int *sum);
 #define vp9_get_sse_sum_8x8 vp9_get_sse_sum_8x8_c
 
@@ -687,12 +690,12 @@
 #define vp9_variance_halfpixvar64x64_v vp9_variance_halfpixvar64x64_v_c
 
 void vp9_rtcd(void);
+
 #include "vpx_config.h"
 
 #ifdef RTCD_C
 static void setup_rtcd_internal(void)
 {
-
 }
 #endif