libdasd: Move get_host_access_count() to libdasd

Reading DASD specific sysfs attributes should be collected in one
library. Move get_host_access_count() to libdasd/dasd_sys.

Remove the old implementation and update any user accordingly.
Also, fix the build order for zdsfs.

Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

include/lib/dasd_sys.h

@@ -13,9 +13,9 @@
 #define LIB_DASD_SYS_H
 
 #include <stdio.h>
-#include "u2s.h"
 
 int dasd_sys_raw_track_access(char *);
 int dasd_reset_chpid(char *, char *);
+int dasd_get_host_access_count(char *device);
 
 #endif /* LIB_DASD_SYS_H */

include/lib/u2s.h

@@ -15,7 +15,5 @@
 #define U2S_BUS_ID_SIZE    32
 
 int u2s_getbusid(char *, char *);
-int u2s_read_attribute(char *, char *, char *, size_t);
-int u2s_get_host_access_count(char *);
 
 #endif /* LIB_U2S_H */