xfs: make symbols static

Instead of the keyword 'static' the macro 'STATIC' is used, so the
symbols are still global with CONFIG_XFS_DEBUG.

Fix this sparse warnings:
  fs/xfs/linux-2.6/xfs_super.c:638:1: warning: symbol 'xfs_blkdev_get' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_super.c:655:1: warning: symbol 'xfs_blkdev_put' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_super.c:876:1: warning: symbol 'xfsaild' was not declared. Should it be static?
  fs/xfs/xfs_bmap.c:6208:1: warning: symbol 'xfs_check_block' was not declared. Should it be static?
  fs/xfs/xfs_dir2_leaf.c:553:1: warning: symbol 'xfs_dir2_leaf_check' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

fs/xfs/linux-2.6/xfs_super.c

@@ -633,7 +633,7 @@ xfs_max_file_offset(
 	return (((__uint64_t)pagefactor) << bitshift) - 1;
 }
 
-int
+STATIC int
 xfs_blkdev_get(
 	xfs_mount_t		*mp,
 	const char		*name,
@@ -650,7 +650,7 @@ xfs_blkdev_get(
 	return -error;
 }
 
-void
+STATIC void
 xfs_blkdev_put(
 	struct block_device	*bdev)
 {
@@ -871,7 +871,7 @@ xfsaild_wakeup(
 	wake_up_process(ailp->xa_task);
 }
 
-int
+STATIC int
 xfsaild(
 	void	*data)
 {

fs/xfs/xfs_bmap.c

@@ -6204,7 +6204,7 @@ xfs_bmap_get_bp(
 	return(bp);
 }
 
-void
+STATIC void
 xfs_check_block(
 	struct xfs_btree_block	*block,
 	xfs_mount_t		*mp,

fs/xfs/xfs_dir2_leaf.c

@@ -549,7 +549,7 @@ xfs_dir2_leaf_addname(
  * Check the internal consistency of a leaf1 block.
  * Pop an assert if something is wrong.
  */
-void
+STATIC void
 xfs_dir2_leaf_check(
 	xfs_inode_t		*dp,		/* incore directory inode */
 	xfs_dabuf_t		*bp)		/* leaf's buffer */