Bug 672787 - Use proper alignment for libpixman ARM assembly; r=siarhei.siamashka

gfx/cairo/libpixman/src/pixman-arm-neon-asm-bilinear.S

@@ -66,6 +66,7 @@
 .eabi_attribute 12, 0
 .arm
 .altmacro
+.p2align 2
 
 #include "pixman-arm-neon-asm.h"
 

gfx/cairo/libpixman/src/pixman-arm-neon-asm.S

@@ -47,6 +47,7 @@
     .eabi_attribute 12, 0 /* suppress Tag_Advanced_SIMD_arch */
     .arm
     .altmacro
+    .p2align 2
 
 #include "pixman-arm-neon-asm.h"
 

gfx/cairo/libpixman/src/pixman-arm-simd-asm.S

@@ -35,6 +35,7 @@
 	.object_arch armv4
 	.arm
 	.altmacro
+	.p2align 2
 
 /* Supplementary macro for setting function attributes */
 .macro pixman_asm_function fname