Sparse fixes: NULL use, header order, ANSI prototypes, static

Fix Sparse warnings:
 * use NULL instead of plain 0
 * rearrange header include order to avoid redefining types accidentally
 * ANSIfy SLIRP
 * avoid "restrict" keyword
 * add static



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6736 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/bt-sdp.c b/hw/bt-sdp.c
index 9dee7c2..992de0e 100644
--- a/hw/bt-sdp.c
+++ b/hw/bt-sdp.c
@@ -948,7 +948,7 @@
         &sdp_service_sdp_s,
         &sdp_service_hid_s,
         &sdp_service_pnp_s,
-        0,
+        NULL,
     };
 
     sdp->channel = params;