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

libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm

Index: libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm
diff --git a/libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm b/libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm
index abf048c2fa88b4b4bee0c9e6288769b9072ccd07..fca91a0db9e6f9f0d46a76c196d3bf9f5571951c 100644
--- a/libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm
+++ b/libvpx/source/libvpx/vp8/common/arm/armv6/copymem16x16_v6.asm
@@ -22,7 +22,9 @@
     ;push   {r4-r7}
 
     ;preload
-    pld     [r0, #31]                ; preload for next 16x16 block
+    pld     [r0]
+    pld     [r0, r1]
+    pld     [r0, r1, lsl #1]
 
     ands    r4, r0, #15
     beq     copy_mem16x16_fast
@@ -88,8 +90,6 @@ copy_mem16x16_1_loop
     ldrneb  r6, [r0, #2]
     ldrneb  r7, [r0, #3]
 
-    pld     [r0, #31]               ; preload for next 16x16 block
-
     bne     copy_mem16x16_1_loop
 
     ldmia       sp!, {r4 - r7}
@@ -121,8 +121,6 @@ copy_mem16x16_4_loop
     ldrne   r6, [r0, #8]
     ldrne   r7, [r0, #12]
 
-    pld     [r0, #31]               ; preload for next 16x16 block
-
     bne     copy_mem16x16_4_loop
 
     ldmia       sp!, {r4 - r7}
@@ -150,7 +148,6 @@ copy_mem16x16_8_loop
 
     add     r2, r2, r3
 
-    pld     [r0, #31]               ; preload for next 16x16 block
     bne     copy_mem16x16_8_loop
 
     ldmia       sp!, {r4 - r7}
@@ -174,7 +171,6 @@ copy_mem16x16_fast_loop
     ;stm        r2, {r4-r7}
     add     r2, r2, r3
 
-    pld     [r0, #31]               ; preload for next 16x16 block
     bne     copy_mem16x16_fast_loop
 
     ldmia       sp!, {r4 - r7}