Add statics and missing #includes for prototypes.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3683 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/block.c b/block.c
index b09ded3..ca8d8c1 100644
--- a/block.c
+++ b/block.c
@@ -124,7 +124,7 @@
 }
 
 
-void bdrv_register(BlockDriver *bdrv)
+static void bdrv_register(BlockDriver *bdrv)
 {
     if (!bdrv->bdrv_aio_read) {
         /* add AIO emulation layer */