[mips] Resolve issue with .align directive, when using clang IAS

Clang IAS does not support .align without args, concrete value is needed.

Change-Id: I03a9daca0be380daa744307b3510446f8d6c9b7e
diff --git a/opengl/libagl/arch-mips/fixed_asm.S b/opengl/libagl/arch-mips/fixed_asm.S
index e1a53bc..a30ffc5 100644
--- a/opengl/libagl/arch-mips/fixed_asm.S
+++ b/opengl/libagl/arch-mips/fixed_asm.S
@@ -17,7 +17,7 @@
 
 
     .text
-    .align
+    .align 4
 
 /*
  * this version rounds-to-nearest and saturates numbers