Changed some more sepolicy properties

Change-Id: I7120ad0aab38e4199eeeab06e00c13bc8b12ad18

sepolicy/fsck.te

 allow fsck diag_partition_device:blk_file { read write };
+allow fsck self:capability { dac_override dac_read_search };

sepolicy/ueventd.te

@@ -5,3 +5,4 @@ allow ueventd device:file relabelfrom;
 allow ueventd sysfs_camera_torch:file { open write };
 allow ueventd vfat:dir search;
 allow ueventd vfat:file { getattr open read };
+allow ueventd self:capability sys_nice;

sepolicy/untrusted_app_27.te

 allow untrusted_app_27 proc_tty_drivers:file { getattr open read };
 allow untrusted_app_27 serialno_prop:file read;
 allow untrusted_app_27 serialno_prop:file open;
+allow untrusted_app_27 serialno_prop:file getattr;

sepolicy/zygote.te

 allow zygote proc_cmdline:file { getattr open read };
+allow zygote device:file write;