Improve domain_transition_pattern to allow mmap entrypoint bin file.

In domain_transition_pattern there is rule:
allow $1 $2:file { getattr open read execute };

map permission is missing here, which is generating lot of AVC.
Replacing permissions with mmap_exec_file_perms set.

policy/support/misc_patterns.spt

@@ -7,7 +7,7 @@
 # 3. target domain
 #
 define(`domain_transition_pattern',`
-	allow $1 $2:file { getattr open read execute };
+	allow $1 $2:file { mmap_exec_file_perms };
 	allow $1 $3:process transition;
 	dontaudit $1 $3:process { noatsecure siginh rlimitinh };
 ')