Simplify _ALIGN_TEXT.

Bug: 16872067
Change-Id: I2b622f252c21ce1b344c040f828ab3f4bf9b6c0a
diff --git a/libc/private/bionic_asm.h b/libc/private/bionic_asm.h
index 7c2686f..d53ebba 100644
--- a/libc/private/bionic_asm.h
+++ b/libc/private/bionic_asm.h
@@ -41,7 +41,7 @@
 #define ENTRY(f) \
     .text; \
     .globl f; \
-    _ALIGN_TEXT; \
+    .align __bionic_asm_align; \
     .type f, __bionic_asm_function_type; \
     f: \
     __bionic_asm_custom_entry(f); \