fix xserver build with clang on armv7

[Matthieu Herrb]

Hi,

I'm not sure if the __VFP_FP__ section below was still useful for gcc
builds, at lead it doesn't build and doesn't look needed with clang
(the functions are all provied by libcompiler_rt, which is included).

ok ?

Index: hw/xfree86/os-support/bsd/arm_video.c
===================================================================
RCS file: /cvs/OpenBSD/xenocara/xserver/hw/xfree86/os-support/bsd/arm_video.c,v
retrieving revision 1.14
diff -u -p -u -r1.14 arm_video.c
--- hw/xfree86/os-support/bsd/arm_video.c       28 Sep 2015 07:14:00 -0000      
1.14
+++ hw/xfree86/os-support/bsd/arm_video.c       20 Jan 2018 10:17:09 -0000
@@ -88,7 +88,8 @@ xf86PrivilegedInit(void)
     xf86OpenConsole();
 }
 
-#ifdef __VFP_FP__
+
+#if defined(__VFP_FP__) && !defined(__clang__)
 /*
  * force softfloat functions into binary,
  * yes the protos/ret are all bogus.
@@ -149,4 +150,5 @@ __subdf3();
 __subsf3();
 __truncdfsf2();
 }
-#endif /* __VFP_FP__ */
+#endif /* __VFP_FP__ && !__clang__ */
+

-- 
Matthieu Herrb