arm: Finish moving newlib to unified syntax for Thumb1

Most code in newlib already uses unified syntax, but just a couple of
laggards remain.  This patch removes these and means the the entire
code base has now been converted.

libgloss/arm/linux-syscalls0.S

@@ -6,6 +6,8 @@
  * is freely granted, provided that this notice is preserved.
  */
 
+	.syntax unified
+
 #include "linux-syscall.h"
 
 #if __thumb__
@@ -146,12 +148,21 @@ ALIAS(utime)
 ALIAS(vfork)
 ALIAS(wait4)
 
+#if defined (__thumb__) && !defined (__thumb2__)
+# define SOCKETCALL(name, NAME) \
+	GLOBAL(name); \
+	push { r0 - r3 }; \
+	movs r0, #SYS_ ## NAME; \
+	b _socketcall_tail; \
+	SIZE(name)
+#else
 # define SOCKETCALL(name, NAME) \
 	GLOBAL(name); \
 	push { r0 - r3 }; \
 	mov r0, #SYS_ ## NAME; \
 	b _socketcall_tail; \
 	SIZE(name)
+#endif
 
 FUNC(_socketcall_tail)
 	mov r1, sp