arm: Use {} around quadword arguments to vld

This fixes building for iOS.

Change-Id: Ice082648c02a3faf93891f7ddc122875e2bdc9cb
diff --git a/vp9/common/arm/neon/vp9_reconintra_neon.asm b/vp9/common/arm/neon/vp9_reconintra_neon.asm
index 279f678..26f5909 100644
--- a/vp9/common/arm/neon/vp9_reconintra_neon.asm
+++ b/vp9/common/arm/neon/vp9_reconintra_neon.asm
@@ -422,7 +422,7 @@
     vdup.u8             q0, r12
 
     ; Load above 8 pixels
-    vld1.8              q1, [r2]
+    vld1.8              {q1}, [r2]
 
     ; preload 8 left into r12
     vld1.8              d18, [r3]!
@@ -518,8 +518,8 @@
     vdup.u8             q0, r12
 
     ; Load above 32 pixels
-    vld1.8              q1, [r2]!
-    vld1.8              q2, [r2]
+    vld1.8              {q1}, [r2]!
+    vld1.8              {q2}, [r2]
 
     ; preload 8 left pixels
     vld1.8              d26, [r3]!