ARM: enable UAL syntax in asm.S

This enables UAL syntax for all asm files instead of only those
which happen to be incompatible with the old, deprecated syntax.

Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/arm/asm.S

@@ -26,6 +26,8 @@
 #   define ELF @
 #endif
 
+        .syntax unified
+
 .macro  require8 val=1
 ELF     .eabi_attribute 24, \val
 .endm

libavcodec/arm/dsputil_vfp.S

@@ -21,7 +21,6 @@
 #include "config.h"
 #include "asm.S"
 
-        .syntax unified
 /*
  * VFP is a floating point coprocessor used in some ARM cores. VFP11 has 1 cycle
  * throughput for almost all the instructions (except for double precision

libavcodec/arm/fmtconvert_vfp.S

@@ -21,8 +21,6 @@
 #include "config.h"
 #include "asm.S"
 
-        .syntax unified
-
 /**
  * ARM VFP optimized float to int16 conversion.
  * Assume that len is a positive number and is multiple of 8, destination

libavcodec/arm/mpegvideo_armv5te_s.S

@@ -95,7 +95,7 @@ function ff_dct_unquantize_h263_armv5te, export=1
         strh            lr, [r0], #2
 
         subs            r3, r3, #8
-        ldrgtd          r4, [r0, #0] /* load data early to avoid load/use pipeline stall */
+        ldrdgt          r4, [r0, #0] /* load data early to avoid load/use pipeline stall */
         bgt             1b
 
         adds            r3, r3, #2

libavcodec/arm/vp8_armv6.S

@@ -20,8 +20,6 @@
 
 #include "asm.S"
 
-        .syntax         unified
-
 .macro rac_get_prob     h, bs, buf, cw, pr, t0, t1
         adds            \bs, \bs, \t0
         lsl             \cw, \cw, \t0