befs: fix style issues in linuxvfs.c

Fix the following type of checkpatch.pl issues:
WARNING: line over 80 characters
+static struct dentry *befs_lookup(struct inode *, struct dentry *, unsigned int);

ERROR: code indent should use tabs where possible
+        if (!bi)$

WARNING: please, no spaces at the start of a line
+        if (!bi)$

WARNING: labels should not be indented
+      unacquire_bh:

WARNING: space prohibited between function name and open parenthesis '('
+                                             sizeof (struct befs_inode_info),

WARNING: braces {} are not necessary for single statement blocks
+       if (!*out) {
+               return -ENOMEM;
+       }

WARNING: Block comments use a trailing */ on a separate line
+        * in special cases */

WARNING: Missing a blank line after declarations
+               int token;
+               if (!*p)

ERROR: do not use assignment in if condition
+       if (!(bh = sb_bread(sb, sb_block))) {

ERROR: space prohibited after that open parenthesis '('
+       if( befs_sb->num_blocks > ~((sector_t)0) ) {

ERROR: space prohibited before that close parenthesis ')'
+       if( befs_sb->num_blocks > ~((sector_t)0) ) {

ERROR: space required before the open parenthesis '('
+       if( befs_sb->num_blocks > ~((sector_t)0) ) {

Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>