Unify our assembler macros.

Our <machine/asm.h> files were modified from upstream, to the extent
that no architecture was actually using the upstream ENTRY or END macros,
assuming that architecture even had such a macro upstream. This patch moves
everyone to the same macros, with just a few tweaks remaining in the
<machine/asm.h> files, which no one should now use directly.

I've removed most of the unused cruft from the <machine/asm.h> files, though
there's still rather a lot in the mips/mips64 ones.

Bug: 12229603
Change-Id: I2fff287dc571ac1087abe9070362fb9420d85d6d
diff --git a/libc/arch-x86/string/bcopy.S b/libc/arch-x86/string/bcopy.S
index 40df1d0..f425c58 100644
--- a/libc/arch-x86/string/bcopy.S
+++ b/libc/arch-x86/string/bcopy.S
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 	/*
 	 * (ov)bcopy (src,dst,cnt)
diff --git a/libc/arch-x86/string/memcmp.S b/libc/arch-x86/string/memcmp.S
index 3b50530..ef36b4f 100644
--- a/libc/arch-x86/string/memcmp.S
+++ b/libc/arch-x86/string/memcmp.S
@@ -4,7 +4,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 ENTRY(memcmp)
 	pushl	%edi
diff --git a/libc/arch-x86/string/strcat.S b/libc/arch-x86/string/strcat.S
index c75f38a..49e8eee 100644
--- a/libc/arch-x86/string/strcat.S
+++ b/libc/arch-x86/string/strcat.S
@@ -4,7 +4,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 #if defined(APIWARN)
 #APP
diff --git a/libc/arch-x86/string/strcmp.S b/libc/arch-x86/string/strcmp.S
index 5d3f4fc..580f4d5 100644
--- a/libc/arch-x86/string/strcmp.S
+++ b/libc/arch-x86/string/strcmp.S
@@ -4,7 +4,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 /*
  * NOTE: I've unrolled the loop eight times: large enough to make a
diff --git a/libc/arch-x86/string/strncmp.S b/libc/arch-x86/string/strncmp.S
index 6649473..9ba83a1 100644
--- a/libc/arch-x86/string/strncmp.S
+++ b/libc/arch-x86/string/strncmp.S
@@ -4,7 +4,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 /*
  * NOTE: I've unrolled the loop eight times: large enough to make a
diff --git a/libc/arch-x86/string/swab.S b/libc/arch-x86/string/swab.S
index 2f6cfb2..b44d134 100644
--- a/libc/arch-x86/string/swab.S
+++ b/libc/arch-x86/string/swab.S
@@ -4,7 +4,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include <private/bionic_asm.h>
 
 /*
  * On the i486, this code is negligibly faster than the code generated