Replace .align with .balign for clarity

Test: run bionic-unit-tests
Change-Id: Icb43cc47e41d58fe3cb71986e05b3134022f895c
diff --git a/linker/arch/mips/begin.S b/linker/arch/mips/begin.S
index cbe1e37..1bdd358 100644
--- a/linker/arch/mips/begin.S
+++ b/linker/arch/mips/begin.S
@@ -27,7 +27,7 @@
  */
 
     .text
-    .align    4
+    .balign   16
     .type    __start,@function
 
     .ent    __start
diff --git a/linker/arch/mips64/begin.S b/linker/arch/mips64/begin.S
index 8f6b94a..b9637e7 100644
--- a/linker/arch/mips64/begin.S
+++ b/linker/arch/mips64/begin.S
@@ -41,7 +41,7 @@
 #endif
 
     .text
-    .align	4
+    .balign	16
     .type	__start,@function
 
     .ent	__start