Revert r97185 "Update libvpx snapshot to v0.9.7-p1 (Cayuga)."

libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm

Index: libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm
diff --git a/libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm b/libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm
index e81aef53d5146a285582550b2d27538ed8d4ffea..029e02aa004e97b2a268005dc97c921eb0859b0d 100644
--- a/libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm
+++ b/libvpx/source/libvpx/vp8/common/arm/armv6/sixtappredict8x4_v6.asm
@@ -32,12 +32,9 @@
     beq         skip_firstpass_filter
 
 ;first-pass filter
-    adr         r12, filter8_coeff
+    ldr         r12, _filter8_coeff_
     sub         r0, r0, r1, lsl #1
 
-    add         r3, r1, #10                 ; preload next low
-    pld         [r0, r3]
-
     add         r2, r12, r2, lsl #4         ;calculate filter location
     add         r0, r0, #3                  ;adjust src only for loading convinience
 
@@ -113,9 +110,6 @@
 
     add         r0, r0, r1                  ; move to next input line
 
-    add         r11, r1, #18                ; preload next low. adding back block width(=8), which is subtracted earlier
-    pld         [r0, r11]
-
     bne         first_pass_hloop_v6
 
 ;second pass filter
@@ -127,7 +121,7 @@ secondpass_filter
     cmp         r3, #0
     beq         skip_secondpass_filter
 
-    adr         r12, filter8_coeff
+    ldr         r12, _filter8_coeff_
     add         lr, r12, r3, lsl #4         ;calculate filter location
 
     mov         r2, #0x00080000
@@ -251,6 +245,8 @@ skip_secondpass_hloop
 ;-----------------
 ;One word each is reserved. Label filter_coeff can be used to access the data.
 ;Data address: filter_coeff, filter_coeff+4, filter_coeff+8 ...
+_filter8_coeff_
+    DCD     filter8_coeff
 filter8_coeff
     DCD     0x00000000,     0x00000080,     0x00000000,     0x00000000
     DCD     0xfffa0000,     0x000c007b,     0x0000ffff,     0x00000000